[Electronic resource]. - Electronic data (1.123 Mb)
. - Режим доступа: http://icm.krasn.ru/refextra.php?id=1719. - Электрон. версия печ. публикации : научное издание. Vol.2 / E.G. Bykova, L.V. Gilyova, I.V. Kireev, S.F. Pyataev и др. ; Ed. By U.Rude and V.V. Shaidurov. - Electronic data (1.123 Mb). - Новосибирск : [s. n.], 2001. - 200 p. - Электрон. версия печ. публикации . - Б. ц.
Перевод заглавия: Уточненные численные методы для задач конвекции- диффузии
Перевод заглавия: Уточненные численные методы для задач конвекции- диффузии
Аннотация: Книга на английском языке состоит из двух томов и содержит результаты, полученные в течение выполнения проекта "Уточнённые численные методы для задач конвекции-диффузии" Фонда Фольксвагена. Второй том посвящён, во-первых, многосеточным алгоритмам для решения систем линейных алгебраических уравнений, полученных методом конечных элементов для самосопряжённых эллиптических уравнений второго порядка, и, во-вторых, проекционно-сеточным аппроксимациям уравнений Навье-Стокса для вязкой несжимаемой жидкости. Для специалистов по вычислительной математике.????
http://icm.krasn.ru/refextra.php?id=1719
Доп.точки доступа:
Gilyova, L.V.; Гилева, Лидия Викторовна; Kireev, I.V.; Киреев, Игорь Валерьевич; Pyataev, S.F.; Пятаев, Сергей Федорович; Rude, U.; Shaidurov, V.V.; Шайдуров, Владимир Викторович; Быкова Е.Г.
Свободных экз. нет
Труды сотрудников ИВМ СО РАН
w10=
Найдено документов в текущей БД: 84
В19
A18
A18
Accurate Numerical Solution of Convection-Diffusion Problems
[Electronic resource]. - Electronic data (1.359 Mb)
. - Режим доступа: http://icm.krasn.ru/refextra.php?id=1719. - Электрон. версия печ. публикации : научное издание. Vol.1 / E.G. Bykova, T.V. Kalpush, E.D. Karepova, I.V. Kireev et al. ; Ed. By U.Rude and V.V. Shaidurov. - Electronic data (1.359 Mb). - Novosibirsk : Publishing House of Institute of Mathematics of Siberian Branch of the Russian academy of Sciences, 2001. - 252 p. - Электрон. версия печ. публикации . - Б. ц.
Перевод заглавия: Уточненные численные методы для задач конвекции- диффузии
Перевод заглавия: Уточненные численные методы для задач конвекции- диффузии
Аннотация: Книга на английском языке состоит из двух томов и содержит результаты, полученные в течение выполнения проекта "Уточнённые численные методы для задач конвекции-диффузии" Фонда Фольксвагена. Первый том посвящён результатам, касающимся проекционно-разностных методов аппроксимации уравнений конвекции-диффузии с преобладанием конвекции и проекционно-разностным методам повышенной точности для самосопряжённых эллиптических уравнений второго порядка. Для специалистов по вычислительной математике.????
http://icm.krasn.ru/refextra.php?id=1719
Доп.точки доступа:
Kalpush, T.V.; Калпуш Т.В.; Karepova, E.D.; Карепова, Евгения Дмитриевна; Kireev, I.V.; Киреев, Игорь Валерьевич; Pyataev, S.F.; Пятаев, Сергей Федорович; Rude, U.; Shaidurov, V.V.; Шайдуров, Владимир Викторович; Быкова Е.Г.
Свободных экз. нет
. - Режим доступа: http://icm.krasn.ru/refextra.php?id=1719. - Электрон. версия печ. публикации : научное издание. Vol.1 / E.G. Bykova, T.V. Kalpush, E.D. Karepova, I.V. Kireev et al. ; Ed. By U.Rude and V.V. Shaidurov. - Electronic data (1.359 Mb). - Novosibirsk : Publishing House of Institute of Mathematics of Siberian Branch of the Russian academy of Sciences, 2001. - 252 p. - Электрон. версия печ. публикации . - Б. ц.
Перевод заглавия: Уточненные численные методы для задач конвекции- диффузии
Перевод заглавия: Уточненные численные методы для задач конвекции- диффузии
Аннотация: Книга на английском языке состоит из двух томов и содержит результаты, полученные в течение выполнения проекта "Уточнённые численные методы для задач конвекции-диффузии" Фонда Фольксвагена. Первый том посвящён результатам, касающимся проекционно-разностных методов аппроксимации уравнений конвекции-диффузии с преобладанием конвекции и проекционно-разностным методам повышенной точности для самосопряжённых эллиптических уравнений второго порядка. Для специалистов по вычислительной математике.????
http://icm.krasn.ru/refextra.php?id=1719
Доп.точки доступа:
Kalpush, T.V.; Калпуш Т.В.; Karepova, E.D.; Карепова, Евгения Дмитриевна; Kireev, I.V.; Киреев, Игорь Валерьевич; Pyataev, S.F.; Пятаев, Сергей Федорович; Rude, U.; Shaidurov, V.V.; Шайдуров, Владимир Викторович; Быкова Е.Г.
Свободных экз. нет
Rate of steady-state reconnection in an incompressible plasma
[Text] : статья / N.V. Erkaev, V.S. Semenov, H.K. Alexeev, H.K. Biernat // Physics of Plasmas. - 2001. - Vol. 8, № 11. - p. 4800-4811DOI 10.1063/1.1410112
. -
Аннотация: The reconnection rate is obtained for the simplest case of two-dimensional (2D) symmetric reconnection in an incompressible plasma. In the short note [Erkaev et al., Phys. Rev. Lett. 84, 1455 (2000)], the reconnection rate is found by matching the outer Petschek solution and the inner diffusion region solution. Here the details of the numerical simulation of the diffusion region are presented and the asymptotic procedure which is used for deriving the reconnection rate is described. The reconnection rate is obtained as a decreasing function of the diffusion region length. For a sufficiently large diffusion region scale, the reconnection rate becomes close to that obtained in the Sweet-Parker solution with the inverse square root dependence on the magnetic Reynolds number Re m , determined for the global size of the current sheet. On the other hand, for a small diffusion region length scale, the reconnection rate turns out to be very similar to that obtained in the Petschek model with a logarithmic dependence on the magnetic Reynolds number Re m . This means that the Petschek regime seems to be possible only in the case of a strongly localized conductivity corresponding to a small scale of the diffusion region. c 2001 American Institute of Physics.
http://icm.krasn.ru/refextra.php?id=1805,
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Semenov, V.S.; Семенов В.С.; Alexeev, H.K.; Алексеев Г.К.; Biernat, H.K.; Еркаев, Николай Васильевич
Аннотация: The reconnection rate is obtained for the simplest case of two-dimensional (2D) symmetric reconnection in an incompressible plasma. In the short note [Erkaev et al., Phys. Rev. Lett. 84, 1455 (2000)], the reconnection rate is found by matching the outer Petschek solution and the inner diffusion region solution. Here the details of the numerical simulation of the diffusion region are presented and the asymptotic procedure which is used for deriving the reconnection rate is described. The reconnection rate is obtained as a decreasing function of the diffusion region length. For a sufficiently large diffusion region scale, the reconnection rate becomes close to that obtained in the Sweet-Parker solution with the inverse square root dependence on the magnetic Reynolds number Re m , determined for the global size of the current sheet. On the other hand, for a small diffusion region length scale, the reconnection rate turns out to be very similar to that obtained in the Petschek model with a logarithmic dependence on the magnetic Reynolds number Re m . This means that the Petschek regime seems to be possible only in the case of a strongly localized conductivity corresponding to a small scale of the diffusion region. c 2001 American Institute of Physics.
http://icm.krasn.ru/refextra.php?id=1805,
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Semenov, V.S.; Семенов В.С.; Alexeev, H.K.; Алексеев Г.К.; Biernat, H.K.; Еркаев, Николай Васильевич
Г
G65
G65
Macroscopic clusters induced by diffusion in a catalytic oxidation reactions
[Text] : статья / A.N. Gorban, V.I. Bykov // Chemical Engineering Science. - 1980. - Vol. 35. - p. 2351-2352
Перевод заглавия: Макроскопические кластеры, индуцированные диффузией в каталитических реакциях окисления
http://icm.krasn.ru/refextra.php?id=2099,
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Bykov, V.I.; Быков, Валерий Иванович; Горбань, Александр Николаевич
Перевод заглавия: Макроскопические кластеры, индуцированные диффузией в каталитических реакциях окисления
| ГРНТИ |
http://icm.krasn.ru/refextra.php?id=2099,
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Bykov, V.I.; Быков, Валерий Иванович; Горбань, Александр Николаевич
В25
У118
У118
Уточненные численные методы для задач конвекции-диффузии
[Текст] = Accurate numerical solution of convection-diffusion problems : в 2 т. / Е. Г. Быкова [и др.]. ; ред. : У. Рюде, В. В. Шайдуров ; Под ред. У.Рюде, В.В.Шайдурова. - Новосибирск : Ин-т математики, 2002. - Авт. указаны на об. тит. л. - Текст на англ. яз. - Б. ц.
ББК В253
Доп.точки доступа:
Быкова, Е.Г.; Bykova E.G.; Калпуш, Т.В.; Kalpush T.V.; Карепова, Евгения Дмитриевна; Karepova E.D.; Киреев, Игорь Валерьевич; Kireev I.V.; Рюде, У. \ред.\; Шайдуров, Владимир Викторович \ред.\; Shaidurov V.V. ГПНТБ СО РАН
Свободных экз. нет
Доп.точки доступа:
Быкова, Е.Г.; Bykova E.G.; Калпуш, Т.В.; Kalpush T.V.; Карепова, Евгения Дмитриевна; Karepova E.D.; Киреев, Игорь Валерьевич; Kireev I.V.; Рюде, У. \ред.\; Шайдуров, Владимир Викторович \ред.\; Shaidurov V.V. ГПНТБ СО РАН
Свободных экз. нет
On a diffusion model of a catalitic reaction
[Текст] : статья / В.И. Быков и др. // React. Kinet. Catal Lett. - 1979. - № 4, Vol. 12 . - С. 503-508
Доп.точки доступа:
Kamenshchikov, L.P.; Каменщиков, Леонид Петрович; Yablonskii, G.S.; Яблонский, Григорий Семенович; Быков, Валерий Иванович
Доп.точки доступа:
Kamenshchikov, L.P.; Каменщиков, Леонид Петрович; Yablonskii, G.S.; Яблонский, Григорий Семенович; Быков, Валерий Иванович
Error estimates for triangular and tetrahedral finite elements in combination with trajectory approximation of first derivatives for advection-diffusion equations
[Text] : статья / Chen H. и др. // Numerical Analysis and Applications. - 2011. - Vol. 4, Iss. 4. - p. 345-362DOI http://link.springer.com/article/10.1134%2FS1995423911040070
. -
Аннотация: In this paper, a modified method of characteristics in combination with integral identities of triangular and tetrahedral linear elements is used to prove a uniform optimal-order error estimate that depends only on the initial data and right-hand side, but not on a scaling parameter ɛ, for multidimensional time-dependent advection-diffusion equations.
Доп.точки доступа:
Chen, H.; Lin, Q.; Shaidurov, V.V.; Шайдуров, Владимир Викторович; Zhou, J.
Аннотация: In this paper, a modified method of characteristics in combination with integral identities of triangular and tetrahedral linear elements is used to prove a uniform optimal-order error estimate that depends only on the initial data and right-hand side, but not on a scaling parameter ɛ, for multidimensional time-dependent advection-diffusion equations.
Доп.точки доступа:
Chen, H.; Lin, Q.; Shaidurov, V.V.; Шайдуров, Владимир Викторович; Zhou, J.
Two-dimensional MHD model of the reconnection diffusion region
[Text] : статья / N.V. Erkaev, V.S. Semenov, H.K. Biernat // Nonlinear Processes in Geophysics. - 2002. - Vol. 9, № 2. - p. 131–138
. - ISSN 1023-5809
Аннотация: Magnetic reconnection is an important process providing a fast conversion of magnetic energy into thermal and kinetic plasma energy. In this concern, a key problem is that of the resistive diffusion region where the reconnec-tion process is initiated. In this paper, the diffusion region is associated with a nonuniform conductivity localized to a small region. The nonsteady resistive incompressible MHD equations are solved numerically for the case of symmetric reconnection of antiparallel magnetic fields. A Petschek type steady-state solution is obtained as a result of time relax-ation of the reconnection layer structure from an arbitrary initial stage. The structure of the diffusion region is studied for various ratios of maximum and minimum values of the plasma resistivity. The effective length of the diffusion re-gion and the reconnection rate are determined as functions of the length scale and the maximum of the resistivity. For suf-ficiently small length scale of the resistivity, the reconnection rate is shown to be consistent with Petschek's formula. By increasing the resistivity length scale and decreasing the re-sistivity maximum, the reconnection layer tends to be wider, and correspondingly, the reconnection rate tends to be more consistent with that of the Parker-Sweet regime.
Полный текст,
http://icm.krasn.ru/refextra.php?id=2434
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Semenov, V.S.; Семенов В. С.; Biernat, H.K.; Еркаев, Николай Васильевич
Аннотация: Magnetic reconnection is an important process providing a fast conversion of magnetic energy into thermal and kinetic plasma energy. In this concern, a key problem is that of the resistive diffusion region where the reconnec-tion process is initiated. In this paper, the diffusion region is associated with a nonuniform conductivity localized to a small region. The nonsteady resistive incompressible MHD equations are solved numerically for the case of symmetric reconnection of antiparallel magnetic fields. A Petschek type steady-state solution is obtained as a result of time relax-ation of the reconnection layer structure from an arbitrary initial stage. The structure of the diffusion region is studied for various ratios of maximum and minimum values of the plasma resistivity. The effective length of the diffusion re-gion and the reconnection rate are determined as functions of the length scale and the maximum of the resistivity. For suf-ficiently small length scale of the resistivity, the reconnection rate is shown to be consistent with Petschek's formula. By increasing the resistivity length scale and decreasing the re-sistivity maximum, the reconnection layer tends to be wider, and correspondingly, the reconnection rate tends to be more consistent with that of the Parker-Sweet regime.
Полный текст,
http://icm.krasn.ru/refextra.php?id=2434
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Semenov, V.S.; Семенов В. С.; Biernat, H.K.; Еркаев, Николай Васильевич
В19
A18
A18
Accurate Numerical Solution of Convection-Diffusion Problems Vol. 1
[Text] = Уточненные численные методы для задач конвекции-диффузии : final Report on Grant I/72342 of Volkswagen Foundation / ed. by U. Rude, V.V. Shaidurov : Novosibirsk Publishing House of Institute of Mathematics. / E.G. Bykova [et al.]. - 2001. - 252 p. - ISBN 5-86134-099-4 : Б. ц.
ББК В19
Аннотация: Книга на английском языке состоит из двух томов и содержит результаты, полученные в течение выполнения проекта "Уточненный численные методы для задач конвекции-диффузии" Фонда Фольксвагена. 1 том посвящен результатам, касающимся проекционно-разностных методов аппроксимации уравнений конвекции-диффузии с преобладанием конвекции и проекционно-разностным методам повышенной точности для самосопряженных эллиптических уравнений второго порядка. Для специалистов по вычислительной математике.
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Rude, Ulrich \ed.\; Shaidurov, V.V. \ed.\; Шайдуров, Владимир Викторович; Bykova, E.G.; Быкова Е.Г.; Kalpush, T.V.; Калпуш Т.В.; Karepova, E.D.; Карепова, Евгения Дмитриевна; Kireev, I.V.; Киреев, Игорь Валерьевич; Pyataev, S.F.; Пятаев, Сергей Федорович; Rude, U.; Shaidurov, V.V.
Экземпляры всего: 1
Фонд (1)
Свободны: Фонд (1)
Аннотация: Книга на английском языке состоит из двух томов и содержит результаты, полученные в течение выполнения проекта "Уточненный численные методы для задач конвекции-диффузии" Фонда Фольксвагена. 1 том посвящен результатам, касающимся проекционно-разностных методов аппроксимации уравнений конвекции-диффузии с преобладанием конвекции и проекционно-разностным методам повышенной точности для самосопряженных эллиптических уравнений второго порядка. Для специалистов по вычислительной математике.
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Rude, Ulrich \ed.\; Shaidurov, V.V. \ed.\; Шайдуров, Владимир Викторович; Bykova, E.G.; Быкова Е.Г.; Kalpush, T.V.; Калпуш Т.В.; Karepova, E.D.; Карепова, Евгения Дмитриевна; Kireev, I.V.; Киреев, Игорь Валерьевич; Pyataev, S.F.; Пятаев, Сергей Федорович; Rude, U.; Shaidurov, V.V.
Экземпляры всего: 1
Фонд (1)
Свободны: Фонд (1)
В19
A18
A18
Accurate Numerical Solution of Convection-Diffusion Problems Vol. 2
[Text] = Уточненные численные методы для задач конвекции-диффузии : final Report on Grant I/72342 of Volkswagen Foundation / ed. by U. Rude, V.V. Shaidurov : Novosibirsk Publishing House of Institute of Mathematics. / E.G. Bykova [et al.]. - 2002. - 158 p. - ISBN 5-86134-099-4 : Б. ц.
ББК В19
Аннотация: Книга на английском языке состоит из двух томов и содержит результаты, полученные в течение выполнения проекта "Уточненный численные методы для задач конвекции-диффузии" Фонда Фольксвагена. 1 том посвящен результатам, касающимся проекционно-разностных методов аппроксимации уравнений конвекции-диффузии с преобладанием конвекции и проекционно-разностным методам повышенной точности для самосопряженных эллиптических уравнений второго порядка. Для специалистов по вычислительной математике.
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Rude, Ulrich \ed.\; Shaidurov, V.V. \ed.\; Шайдуров, Владимир Викторович; Bykova, E.G.; Быкова Е.Г.; Gilyova, L.V.; Гилева, Лидия Викторовна; Kireev, I.V.; Киреев, Игорь Валерьевич; Rude, U.; Shaidurov, V.V.
Свободных экз. нет
Аннотация: Книга на английском языке состоит из двух томов и содержит результаты, полученные в течение выполнения проекта "Уточненный численные методы для задач конвекции-диффузии" Фонда Фольксвагена. 1 том посвящен результатам, касающимся проекционно-разностных методов аппроксимации уравнений конвекции-диффузии с преобладанием конвекции и проекционно-разностным методам повышенной точности для самосопряженных эллиптических уравнений второго порядка. Для специалистов по вычислительной математике.
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Rude, Ulrich \ed.\; Shaidurov, V.V. \ed.\; Шайдуров, Владимир Викторович; Bykova, E.G.; Быкова Е.Г.; Gilyova, L.V.; Гилева, Лидия Викторовна; Kireev, I.V.; Киреев, Игорь Валерьевич; Rude, U.; Shaidurov, V.V.
Свободных экз. нет
Magnetic field and spin effects on the recombination of radicals on two-dimensional surfaces
/ N. N. Lukzen [et al.] // Dokl. Phys. Chem. - 2013. - Vol. 449. - P44-47, DOI 10.1134/S0012501613030056. - Cited References: 15. - This work was supported by the Russian Foundation for Basic Research (project nos. 11-03-00356 and 11-03-00296), the Siberian Branch of the RAS (interdisciplinary project no. 71), the Division of Chemistry and Materials Science, RAS (project no. 5.1.1), and program P-220 of the Government of the Russian Federation (grant no. 11.G34.31.0045).
. - 4. - ISSN 0012-5016
РУБ Chemistry, Physical
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Lukzen, N.N.; Ivanov, K.L.; Sadovsky, V.M.; Садовский, Владимир Михайлович; Kaptein, R.; Sagdeev, R.Z.
Полный текст,
Полный текст на сайте правообладателя
Доп.точки доступа:
Lukzen, N.N.; Ivanov, K.L.; Sadovsky, V.M.; Садовский, Владимир Михайлович; Kaptein, R.; Sagdeev, R.Z.
On electric field penetration from ground into the ionosphere
[Text] : статья / V.V. Denisenko [et al.] // J. Atmos. Sol.-Terr. Phys. - 2013. - Vol. 102. - P341-353, DOI 10.1016/j.jastp.2013.05.019. - Cited References: 29. - This work is supported by Grants 09-06-91000, 12-05-00152 from the Russian Foundation for Basic Research. Additional support is due to the Austrian "Fonds zur Forderung der wissenschaftlichen Forschung" under Project I193-N16 and the "Verwaltungsstelle fur Auslandsbeziehungen" of the Austrian Academy of Sciences. The authors are grateful to the unknown reviewers for the fruitful detailed discussion.
. - 13. - ISSN 1364-6826
РУБ Geochemistry & Geophysics + Meteorology & Atmospheric Sciences
Аннотация: A quasi stationary three dimensional model of electric fields and currents in the conductor that includes the Earth's atmosphere and ionosphere is created. The results of the three dimensional model are simpler regarding interpretation and explanation than two dimensional ones. Known approaches regarding the ionosphere as a boundary condition at the upper boundary of the atmospheric conductor are analyzed. For the investigation of the electric field penetration from ground into the ionosphere it is sufficient to take into account only integral conductivity of the ionosphere. A mathematical simulation has shown that the resulting electric field in the ionosphere is negligible in contrast to the general point of view that such a penetration is a physical process which potentially creates ionospheric precursors of earthquakes. (C) 2013 Elsevier Ltd. All rights reserved.
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Denisenko, V.V.; Денисенко, Валерий Васильевич; Ampferer, M.; Pomozov, E.V.; Помозов, Егор Владимирович; Kitaev, A.V.; Китаев, Анатолий Валерьевич; Hausleitner, W.; Stangl, G.; Biernat, H.K.; Russian Foundation for Basic Research [09-06-91000, 12-05-00152]; Austrian "Fonds zur Forderung der wissenschaftlichen Forschung" [I193-N16]; "Verwaltungsstelle fur Auslandsbeziehungen" of the Austrian Academy of Sciences
Рубрики:
ELECTROSTATIC-FIELD
VERTICAL DIFFUSION
REGION IONOSPHERE
LOWER ATMOSPHERE
PRE-EARTHQUAKE
CONDUCTIVITY
LITHOSPHERE
MECHANISM
Кл.слова (ненормированные):
Earthquake precursors -- Electric field -- Atmosphere -- Ionosphere
ELECTROSTATIC-FIELD
VERTICAL DIFFUSION
REGION IONOSPHERE
LOWER ATMOSPHERE
PRE-EARTHQUAKE
CONDUCTIVITY
LITHOSPHERE
MECHANISM
Кл.слова (ненормированные):
Earthquake precursors -- Electric field -- Atmosphere -- Ionosphere
Аннотация: A quasi stationary three dimensional model of electric fields and currents in the conductor that includes the Earth's atmosphere and ionosphere is created. The results of the three dimensional model are simpler regarding interpretation and explanation than two dimensional ones. Known approaches regarding the ionosphere as a boundary condition at the upper boundary of the atmospheric conductor are analyzed. For the investigation of the electric field penetration from ground into the ionosphere it is sufficient to take into account only integral conductivity of the ionosphere. A mathematical simulation has shown that the resulting electric field in the ionosphere is negligible in contrast to the general point of view that such a penetration is a physical process which potentially creates ionospheric precursors of earthquakes. (C) 2013 Elsevier Ltd. All rights reserved.
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Denisenko, V.V.; Денисенко, Валерий Васильевич; Ampferer, M.; Pomozov, E.V.; Помозов, Егор Владимирович; Kitaev, A.V.; Китаев, Анатолий Валерьевич; Hausleitner, W.; Stangl, G.; Biernat, H.K.; Russian Foundation for Basic Research [09-06-91000, 12-05-00152]; Austrian "Fonds zur Forderung der wissenschaftlichen Forschung" [I193-N16]; "Verwaltungsstelle fur Auslandsbeziehungen" of the Austrian Academy of Sciences
Scaling of the inner electron diffusion region in collisionless magnetic reconnection
/ A. Divin [et al.] // J. Geophys. Res-Space Phys. - 2012. - Vol. 117. - Ст. A06217, DOI 10.1029/2011JA017464. - Cited References: 43. - The present work is supported partially by the Onderzoekfonds KU Leuven (Research Fund KU Leuven), by the NASA MMS grant NNX08AO84G and by the European Commission's Seventh Framework Programme (FP7/2007-2013) under the grant agreement 263340 (SWIFF project, www. swiff. eu) and 269198 - Geoplasmas (Marie Curie International Research Staff Exchange Scheme). Additional support is provided by RFBR grants 09-05-91000-ANF-a, 12-05-00152-a and 12-05-00918-a, Austrian Science Fund project T193-N16 and by SPSU grants 11.38.47.2011 and 11.38.84.2012. The simulations were conducted on the resources of the Vlaams Supercomputer Centrum (VSC) at the Katholieke Universiteit Leuven. The authors wish to thank the reviewers for their comments that helped to improve the manuscript.
. - ISSN 2169-9380
РУБ Astronomy & Astrophysics
Аннотация: The Sweet-Parker analysis of the inner electron diffusion region of collisionless magnetic reconnection is presented. The study includes charged particles motion near the X-line and an appropriate approximation of the off-diagonal term for the electron pressure tensor. The obtained scaling shows that the width of the inner electron diffusion region is equal to the electron inertial length, and that electrons are accelerated up to the electron Alfven velocity in X-line direction. The estimated effective plasma conductivity is based on the electron gyrofrequency rather than the binary collision frequency, and gives the extreme (minimal) value of the plasma conductivity similar to Bohm diffusion. The scaling properties are verified by means of Particle-in-Cell simulations. An ad hoc parameter needs to be introduced to the scaling relations in order to better match the theory and simulations.
Доп.точки доступа:
Divin, A.; Lapenta, G.; Markidis, S.; Semenov, V.S.; Erkaev, N.V.; Еркаев, Николай Васильевич; Korovinskiy, D.B.; Biernat, H.K.
Аннотация: The Sweet-Parker analysis of the inner electron diffusion region of collisionless magnetic reconnection is presented. The study includes charged particles motion near the X-line and an appropriate approximation of the off-diagonal term for the electron pressure tensor. The obtained scaling shows that the width of the inner electron diffusion region is equal to the electron inertial length, and that electrons are accelerated up to the electron Alfven velocity in X-line direction. The estimated effective plasma conductivity is based on the electron gyrofrequency rather than the binary collision frequency, and gives the extreme (minimal) value of the plasma conductivity similar to Bohm diffusion. The scaling properties are verified by means of Particle-in-Cell simulations. An ad hoc parameter needs to be introduced to the scaling relations in order to better match the theory and simulations.
Доп.точки доступа:
Divin, A.; Lapenta, G.; Markidis, S.; Semenov, V.S.; Erkaev, N.V.; Еркаев, Николай Васильевич; Korovinskiy, D.B.; Biernat, H.K.
Fitted scheme of the finite element method for a convection-diffusion equation
[Text] / E.D. Karepova, V.V. Shaidurov // Russ. J. Numer. Anal. Math. Model. - 2000. - Vol. 15, Is. 2. - pp. 167-182, DOI 10.1515/rnam.2000.15.2.167. - Cited References: 8
. - ISSN 0927-6467
РУБ Engineering, Multidisciplinary + Mathematics, Applied
Аннотация: We consider the Galerkin piecewise linear finite element method for an ordinary convection-diffusion boundary value problem with a small parameter in front of the highest derivative. For the generation of a discrete linear algebraic system we use the special quadrature formulae that take into account the boundary layer character of the solution. It is proved that the resulting discrete problem is of epsilon(2) + h(2)-order of accuracy in the uniform discrete norm for small h and epsilon. The numerical example shows the advantage of the considered discrete scheme over two commonly used difference schemes.
Доп.точки доступа:
Karepova, E.D.; Карепова, Евгения Дмитриевна; Shaidurov, V.V.; Шайдуров, Владимир Викторович
Аннотация: We consider the Galerkin piecewise linear finite element method for an ordinary convection-diffusion boundary value problem with a small parameter in front of the highest derivative. For the generation of a discrete linear algebraic system we use the special quadrature formulae that take into account the boundary layer character of the solution. It is proved that the resulting discrete problem is of epsilon(2) + h(2)-order of accuracy in the uniform discrete norm for small h and epsilon. The numerical example shows the advantage of the considered discrete scheme over two commonly used difference schemes.
Доп.точки доступа:
Karepova, E.D.; Карепова, Евгения Дмитриевна; Shaidurov, V.V.; Шайдуров, Владимир Викторович
Model of electron pressure anisotropy in the electron diffusion region of collisionless magnetic reconnection
[Text] / A. Divin [et al.] // Phys. Plasmas. - 2010. - Vol. 17, Is. 12. - Ст. 122102, DOI 10.1063/1.3521576. - Cited References: 42. - The present work is supported partially by the Onderzoekfonds KU Leuven (Research Fund KU Leuven) and by the European Commission's Seventh Framework Programme (FP7/2007-2013) under grant Agreement No. 218816 (SOTERIA project, www.soteria- space.eu). Additional support is provided by RFBR (Grant No. 09-05-91000-ANF-a). V.S.S. thanks ISSI for hospitality and financial support. The simulations were conducted on the resources of the Vlaams Supercomputer Centrum (VSC) at the Katholieke Universiteit Leuven.
. - ISSN 1070-664X
РУБ Physics, Fluids & Plasmas
Аннотация: A new model of the electron pressure anisotropy in the electron diffusion region in collisionless magnetic reconnection is presented for the case of antiparallel configuration of magnetic fields. The plasma anisotropy is investigated as source of collisionless dissipation. By separating electrons in the vicinity of the neutral line into two broad classes of inflowing and accelerating populations, it is possible to derive a simple closure for the off-diagonal electron pressure component. The appearance of these two electron populations near the neutral line is responsible for the anisotropy and collisionless dissipation in the magnetic reconnection. Particle-in-cell simulations verify the proposed model, confirming first the presence of two particle populations and second the analytical results for the off-diagonal electron pressure component. Furthermore, test-particle calculations are performed to compare our approach with the model of electron pressure anisotropy in the inner electron diffusion region by Fujimoto and Sydora [Phys. Plasmas 16, 112309 (2009)]. (C) 2010 American Institute of Physics. [doi:10.1063/1.3521576]
Доп.точки доступа:
Divin, A.; Markidis, S.; Lapenta, G.; Semenov, V.S.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.
Аннотация: A new model of the electron pressure anisotropy in the electron diffusion region in collisionless magnetic reconnection is presented for the case of antiparallel configuration of magnetic fields. The plasma anisotropy is investigated as source of collisionless dissipation. By separating electrons in the vicinity of the neutral line into two broad classes of inflowing and accelerating populations, it is possible to derive a simple closure for the off-diagonal electron pressure component. The appearance of these two electron populations near the neutral line is responsible for the anisotropy and collisionless dissipation in the magnetic reconnection. Particle-in-cell simulations verify the proposed model, confirming first the presence of two particle populations and second the analytical results for the off-diagonal electron pressure component. Furthermore, test-particle calculations are performed to compare our approach with the model of electron pressure anisotropy in the inner electron diffusion region by Fujimoto and Sydora [Phys. Plasmas 16, 112309 (2009)]. (C) 2010 American Institute of Physics. [doi:10.1063/1.3521576]
Доп.точки доступа:
Divin, A.; Markidis, S.; Lapenta, G.; Semenov, V.S.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.
Effects of vibrations on dynamics of miscible liquids
[Text] / Y. Gaponenko, V. Shevtsova // Acta Astronaut. - 2010. - Vol. 66, Is. 01.02.2013. - pp. 174-182, DOI 10.1016/j.actaastro.2009.05.019. - Cited References: 10
. - ISSN 0094-5765
РУБ Engineering, Aerospace
Аннотация: We report on a numerical study of the mixing of two miscible fluids in gravitationally stable configuration. In the absence of external forces the diffusion process leads to the mixing of species. The aim of this study is to analyze the physical mechanism by which vibrations affect the mixing characteristic of two stratified miscible fluids. The translational periodic vibrations of a rigid cell filled with different mixtures of water-isopropanol are imposed. The vibrations with a constant frequency and amplitude are directed along the interface. In absence of gravity vibration-induced mass transport is incomparably faster than in diffusion regime. Our results highlight the strong interplay between gravity and vibrational impact, the relative weight of each effect is determined by ratio vibrational and classical Rayleigh numbers. (C) 2009 Elsevier Ltd. All rights reserved.
Доп.точки доступа:
Gaponenko, Y.; Гапоненко, Юрий Анатольевич; Shevtsova, V.
Аннотация: We report on a numerical study of the mixing of two miscible fluids in gravitationally stable configuration. In the absence of external forces the diffusion process leads to the mixing of species. The aim of this study is to analyze the physical mechanism by which vibrations affect the mixing characteristic of two stratified miscible fluids. The translational periodic vibrations of a rigid cell filled with different mixtures of water-isopropanol are imposed. The vibrations with a constant frequency and amplitude are directed along the interface. In absence of gravity vibration-induced mass transport is incomparably faster than in diffusion regime. Our results highlight the strong interplay between gravity and vibrational impact, the relative weight of each effect is determined by ratio vibrational and classical Rayleigh numbers. (C) 2009 Elsevier Ltd. All rights reserved.
Доп.точки доступа:
Gaponenko, Y.; Гапоненко, Юрий Анатольевич; Shevtsova, V.
Symmetry Analysis of Equations for Convection
[Текст] : статья / I.I. Ryzhkov // Journal of Siberian Federal University. Mathematics & Physics = Журнал Сибирского федерального университета. Математика и физика. - 2008. - Т. 1, № 4. - С. 410-431
Кл.слова (ненормированные):
Lie symmetry group -- equivalence transformation -- binary mixture -- convection -- Soret and Dufour
Аннотация: The differential equations describing convection in binary mixture with Soret and Dufour effects are considered. The symmetry classification of these equations with respect to the constant parameters is made. It is shown that a generator producing equivalence transformations of constants is defined accurately up to a factor arbitrarily depending on these constants. The equivalence group admitted by the governing equations is calculated. Using this group, a transformation connecting the systems with and without Soret and Dufour terms is derived. In pure Soret case, it reduces to a linear change of temperature and concentration. The presence of Dufour effect requires an additional change of thermal diffusivity and diffusion coefficient. A scheme for reducing an initial and boundary value problem for Soret–Dufour equations to a problem for the system without these effects is proposed.
Полный текст на сайте журнала
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Рыжков, Илья Игоревич
Кл.слова (ненормированные):
Lie symmetry group -- equivalence transformation -- binary mixture -- convection -- Soret and Dufour
Аннотация: The differential equations describing convection in binary mixture with Soret and Dufour effects are considered. The symmetry classification of these equations with respect to the constant parameters is made. It is shown that a generator producing equivalence transformations of constants is defined accurately up to a factor arbitrarily depending on these constants. The equivalence group admitted by the governing equations is calculated. Using this group, a transformation connecting the systems with and without Soret and Dufour terms is derived. In pure Soret case, it reduces to a linear change of temperature and concentration. The presence of Dufour effect requires an additional change of thermal diffusivity and diffusion coefficient. A scheme for reducing an initial and boundary value problem for Soret–Dufour equations to a problem for the system without these effects is proposed.
Полный текст на сайте журнала
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Рыжков, Илья Игоревич
The 2.5-D analytical model of steady-state Hall magnetic reconnection
[Text] / D. B. Korovinskiy [et al.] // J. Geophys. Res-Space Phys. - 2008. - Vol. 113, Is. A4. - Ст. A04205, DOI 10.1029/2007JA012852. - Cited References: 56
. - ISSN 0148-0227
РУБ Astronomy & Astrophysics
Аннотация: An analytical model of steady-state magnetic reconnection in a collisionless incompressible plasma is developed using the electron Hall MHD approximation. It is shown that the initial complicated system of equations may be split into a system of independent equations, and the solution of the problem is based on the solution of the Grad-Shafranov equation for a magnetic potential. This equation is found to be fundamental for the whole problem analysis. An electric field potential jump across the electron diffusion region and the separatrices is proved to be the necessary condition for steady- state reconnection. Besides of this fact, it is found that the protons in-plane motion obeys to Bernoulli law. The solution obtained demonstrates all essential Hall reconnection features, namely proton acceleration up to Alfven velocities and the formation of Hall current systems and a magnetic field structure as expected.
Доп.точки доступа:
Korovinskiy, D.B.; Semenov, V.S.; Erkaev, N.V.; Еркаев, Николай Васильевич; Divin, A.V.; Biernat, H.K.
Рубрики:
CURRENT SHEET
X-LINE
COLLISIONLESS RECONNECTION
ANOMALOUS RESISTIVITY
ELECTRON DISSIPATION
DIFFUSION REGION
CURRENT SYSTEM
FIELD
CHALLENGE
SIMULATIONS
CURRENT SHEET
X-LINE
COLLISIONLESS RECONNECTION
ANOMALOUS RESISTIVITY
ELECTRON DISSIPATION
DIFFUSION REGION
CURRENT SYSTEM
FIELD
CHALLENGE
SIMULATIONS
Аннотация: An analytical model of steady-state magnetic reconnection in a collisionless incompressible plasma is developed using the electron Hall MHD approximation. It is shown that the initial complicated system of equations may be split into a system of independent equations, and the solution of the problem is based on the solution of the Grad-Shafranov equation for a magnetic potential. This equation is found to be fundamental for the whole problem analysis. An electric field potential jump across the electron diffusion region and the separatrices is proved to be the necessary condition for steady- state reconnection. Besides of this fact, it is found that the protons in-plane motion obeys to Bernoulli law. The solution obtained demonstrates all essential Hall reconnection features, namely proton acceleration up to Alfven velocities and the formation of Hall current systems and a magnetic field structure as expected.
Доп.точки доступа:
Korovinskiy, D.B.; Semenov, V.S.; Erkaev, N.V.; Еркаев, Николай Васильевич; Divin, A.V.; Biernat, H.K.
Theoretical model of steady-state magnetic reconnection in collisionless incompressible plasma based on the Grad-Shafranov equation solution
[Text] / D. Korovinskiy [et al.] // Adv. Space Res. - 2008. - Vol. 41, Is. 10. - P1556-1561, DOI 10.1016/j.asr.2006.10.014. - Cited References: 13
. - ISSN 0273-1177
РУБ Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences
Аннотация: The problem of steady-state magnetic reconnection in an infinite current layer in collisionless, incompressible, nonresistive plasma, except of the electron diffusion region, is examined analytically using the electron Hall magnetohydrodynamics approach. It is found that this approach allows reducing the problem to the magnetic field potential finding, while last one has to satisfy the Grad-Shafranov equation. The obtained solution demonstrates all essential Hall reconnection features, namely proton acceleration up to Alfven velocities, the forming of Hall current systems and the magnetic field structure expected. It turns out that the necessary condition of steady-state reconnection to exist is an electric field potential jump across the electron diffusion region and the separatrices. Besides, the powerful mechanism of electron acceleration in X-line direction is required. It must accelerate electrons up to the electron Alfven velocity inside the diffusion region and on the separatrixes. This is a necessary condition for steady-state reconnection as well. (c) 2006 COSPAR. Published by Elsevier Ltd. All rights reserved.
Доп.точки доступа:
Korovinskiy, D.; Semenov, V.S.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.; Penz, T.
Аннотация: The problem of steady-state magnetic reconnection in an infinite current layer in collisionless, incompressible, nonresistive plasma, except of the electron diffusion region, is examined analytically using the electron Hall magnetohydrodynamics approach. It is found that this approach allows reducing the problem to the magnetic field potential finding, while last one has to satisfy the Grad-Shafranov equation. The obtained solution demonstrates all essential Hall reconnection features, namely proton acceleration up to Alfven velocities, the forming of Hall current systems and the magnetic field structure expected. It turns out that the necessary condition of steady-state reconnection to exist is an electric field potential jump across the electron diffusion region and the separatrices. Besides, the powerful mechanism of electron acceleration in X-line direction is required. It must accelerate electrons up to the electron Alfven velocity inside the diffusion region and on the separatrixes. This is a necessary condition for steady-state reconnection as well. (c) 2006 COSPAR. Published by Elsevier Ltd. All rights reserved.
Доп.точки доступа:
Korovinskiy, D.; Semenov, V.S.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.; Penz, T.
Aspects of solar wind interaction with Mars: comparison of fluid and hybrid simulations
[Text] / N. V. Erkaev [et al.] // Ann. Geophys. - 2007. - Vol. 25, Is. 1. - P145-159. - Cited References: 32
. - ISSN 0992-7689
РУБ Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences
Аннотация: Mars has no global intrinsic magnetic field, and consequently the solar wind plasma interacts directly with the planetary ionosphere. The main factors of this interaction are: thermalization of plasma after the bow shock, ion pick-up process, and the magnetic barrier effect, which results in the magnetic field enhancement in the vicinity of the obstacle. Results of ideal magnetohydrodynamic and hybrid simulations are compared in the subsolar magnetosheath region. Good agreement between the models is obtained for the magnetic field and plasma parameters just after the shock front, and also for the magnetic field profiles in the magnetosheath. Both models predict similar positions of the proton stoppage boundary, which is known as the ion composition boundary. This comparison allows one to estimate applicability of magnetohydrodynamics for Mars, and also to check the consistency of the hybrid model with Rankine-Hugoniot conditions at the bow shock. An additional effect existing only in the hybrid model is a diffusive penetration of the magnetic field inside the ionosphere. Collisions between ions and neutrals are analyzed as a possible physical reason for the magnetic diffusion seen in the hybrid simulations.
Доп.точки доступа:
Erkaev, N.V.; Еркаев, Николай Васильевич; Bosswetter, A.; Motschmann, U.; Biernat, H.K.
Рубрики:
ION COMPOSITION BOUNDARY
BOW SHOCK
MARTIAN IONOSPHERE
MAGNETOSHEATH FLOW
PLASMA BOUNDARIES
MAGNETIC-FIELD
MHD
MODEL
MAGNETOSPHERE
VENUS
Кл.слова (ненормированные):
interplanetary physics -- planetary bow shocks -- solar wind plasma -- space plasma physics -- numerical simulation studies
ION COMPOSITION BOUNDARY
BOW SHOCK
MARTIAN IONOSPHERE
MAGNETOSHEATH FLOW
PLASMA BOUNDARIES
MAGNETIC-FIELD
MHD
MODEL
MAGNETOSPHERE
VENUS
Кл.слова (ненормированные):
interplanetary physics -- planetary bow shocks -- solar wind plasma -- space plasma physics -- numerical simulation studies
Аннотация: Mars has no global intrinsic magnetic field, and consequently the solar wind plasma interacts directly with the planetary ionosphere. The main factors of this interaction are: thermalization of plasma after the bow shock, ion pick-up process, and the magnetic barrier effect, which results in the magnetic field enhancement in the vicinity of the obstacle. Results of ideal magnetohydrodynamic and hybrid simulations are compared in the subsolar magnetosheath region. Good agreement between the models is obtained for the magnetic field and plasma parameters just after the shock front, and also for the magnetic field profiles in the magnetosheath. Both models predict similar positions of the proton stoppage boundary, which is known as the ion composition boundary. This comparison allows one to estimate applicability of magnetohydrodynamics for Mars, and also to check the consistency of the hybrid model with Rankine-Hugoniot conditions at the bow shock. An additional effect existing only in the hybrid model is a diffusive penetration of the magnetic field inside the ionosphere. Collisions between ions and neutrals are analyzed as a possible physical reason for the magnetic diffusion seen in the hybrid simulations.
Доп.точки доступа:
Erkaev, N.V.; Еркаев, Николай Васильевич; Bosswetter, A.; Motschmann, U.; Biernat, H.K.