Труды сотрудников ИВМ СО РАН

[Text] / N. V. Erkaev [et al.] // Phys. Plasmas. - 2005. - Vol. 12, Is. 1. - Ст. 12905, DOI 10.1063/1.1833392. - Cited References: 18 . - ISSN 1070-664XРУБ Physics, Fluids & Plasmas

Аннотация: Within the framework of the assumption of large azimuthal wave numbers, the equations for Alfven and slow magnetosonic waves are obtained using frozen-in material coordinates. These equations are specified for the case of a nonuniform magnetic field with axial symmetry. Assuming a meridional polarization of the magnetic field and velocity perturbations, the effects of Alfven wave propagation are analyzed which are related to geometric characteristics of a nonuniform magnetic field: (a) A finite curvature radius of the magnetic field lines and (b) convergence of magnetic field lines. The interaction between the Alfven and magnetosonic waves is found to be strongly dependent on the curvature radius of the magnetic tube and the local plasma beta parameter. The electric field amplitude and the length scale of a wave front are found to increase very strongly in the course of the Alfven wave propagation along a converging magnetic flux tube. Also studied is a temporal decrease of the wave perturbations which is caused by dissipation at the conducting boundary. (C) 2005 American Institute of Physics.


Доп.точки доступа:
Erkaev, N.V.; Еркаев, Николай Васильевич; Shaidurov, V.A.; Semenov, V.S.; Langmayr, D.; Biernat, H.K.

/ N. V. Erkaev [et al.] // Advances in Space Research. - 1994. - Vol. 14, Is. 7. - P81-86 . - ISSN 0273-1177
Аннотация: The magnetic barrier is a significant fraction of the magnetosheath region where magnetic forces react back on the plasma flow. We use a magnetohydrodynamic approach to calculate the solar wind flow around the magnetosphere. The use of so-called frozen-in coordinates, where the flow lines and the magnetic field are coordinate axes, is found to be most appropriate. Numerical solutions are presented for the problem of the flow around a blunt body. The results near the magnetopause are used as input parameters for a model of the reconnection of magnetic field lines based on shock-type structures. В© 1994.

Scopus

Держатели документа:
Computer Center, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Space Research Institute, Austrian Academy of Sciences, Graz, Austria
Institute of Physics, State University St. Petersburg, St. Petergof, Russia
Department of Mathematical Sciences, University of St. Andrews, Scotland, United Kingdom
NASA Goddard Space Flight Center, Greenbelt, MD, United States
ИВМ СО РАН

Доп.точки доступа:
Erkaev, N.V.; Еркаев, Николай Васильевич; Mezentsev, A.V.; Biernat, H.K.; Besser, B.P.; Bachmaier, G.A.; Semenov, V.S.; Rijnbeek, R.P.; Farrugia, C.J.

/ V. M. Belolipetskii, S. N. Genova // J. Sib. Fed. Univ. Math. Phys. - 2016. - Vol. 9, Is. 2. - P158-165, DOI 10.17516/1997-1397-2016-9-2-158-165 . - ISSN 1997-1397
Аннотация: The theoretical description of the temperature field in the soils during freezing or thawing is carried out using solutions of Stefan’s problem. A mathematical model based on the equations of thermal conductivity for frozen and thawed layers. We consider the areas in which there are lakes or bogs. We distinguished the following layers in the vertical structure of the zone of permafrost: thawed soil, frozen soil, water, ice, snow. We offer a simplified numerical algorithm for solving of one-dimensional (in the vertical direction) heat conduction problems with moving boundaries of phase transition with the formation of new and cancellation of existing layers. A simplified numerical algorithm for solving one-dimensional (in the vertical direction) heat conduction problems with moving boundaries of phase transition with the formation of new and cancellation of existing layers is offering. © Siberian Federal University. All rights reserved.

Scopus,
Смотреть статью,
WOS,
РИНЦ

Держатели документа:
Institute of Computational Modelling SB RAS, Akademgorodok, 50/44, Krasnoyarsk, Russian Federation
Institute of Mathematics and Computer Science, Siberian Federal University, Svobodny, 79, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Belolipetskii, V. M.; Genova, S. N.

/ V. M. Belolipetskii, S. N. Genova // IOP Conference Series: Earth and Environmental Science : Institute of Physics Publishing, 2018. - Vol. 193: 5th All-Russian Conference with International Participation on Polar Mechanics 2018 (9 October 2018 through 11 October 2018, ) Conference code: 141746, Is. 1, DOI 10.1088/1755-1315/193/1/012005 . -
Аннотация: Simple description of the temperature field in soils during their freezing or thawing is considered with the help of solutions of Stefan problems. A mathematical model is based on the equations of thermal conductivity for the frozen and thawed layers. In the vertical structure of the permafrost zone, three layers are distinguished: thawed soil, frozen soil, snow. A simplified numerical algorithm for solving one-dimensional (in the vertical direction) thermal conductivity problems with moving phase transition boundaries with the formation of new and cancellation of existing layers is proposed. © Published under licence by IOP Publishing Ltd.

Scopus,
Смотреть статью

Держатели документа:
Institute of Computational Modeling SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Belolipetskii, V. M.; Genova, S. N.

/ V. M. Sadovskii, O. V. Sadovskaya, V. A. Detkov // IOP Conference Series: Earth and Environmental Science : Institute of Physics Publishing, 2018. - Vol. 193: 5th All-Russian Conference with International Participation on Polar Mechanics 2018 (9 October 2018 through 11 October 2018, ) Conference code: 141746, Is. 1, DOI 10.1088/1755-1315/193/1/012058 . -
Аннотация: Computational technology for multiprocessor computing systems of cluster architecture is developed, the ultimate goal of which is numerical modeling of wave fields generated by the electromagnetic pulse source "Yenisei" in blocky-layered geomedia. To describe the wave processes, mathematical models of the dynamics of elastic and elastic-plastic media, of porous and granular materials are applied. The algorithms of numerical realization are constructed based on the method of two-cyclic splitting with respect to spatial variables. Computational experiments showed that the proposed technology allows reproducing the system of waves near the region of excitation of seismic oscillations in 3D setting with a high degree of details and accuracy. The results of computations can be used in working out the optimal modes of functioning the source "Yenisei", when mechanical characteristics of the layers vary in a wide range from solid and frozen grounds with inclusions of rock till granular and clayey water-saturated grounds. Numerical analysis makes also possible to obtain the averaged data, necessary for the adequate simulation of the localized pulse action from the source, using simplified mathematical models for calculating the synthetic seismograms of reflected waves over large scale and at great depth of layers bedding in complex geomedia. © Published under licence by IOP Publishing Ltd.

Scopus,
Смотреть статью

Держатели документа:
Institute of Computational Modeling, SB RAS, Akademgorodok 50/44, Krasnoyarsk, Russian Federation
LLC Evenkiyageofizika, Leningradskaya 66, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sadovskii, V. M.; Sadovskaya, O. V.; Detkov, V. A.

[Текст] / Виктор М. Белолипецкий, Светлана Н. Генова // Новые методы и результаты исследований ландшафтов в Европе, Центральной Азии и Сибири : монография. В 5-ти томах. - Москва : Всероссийский научно-исследовательский институт агрохимии имени Д.Н. Прянишникова, 2018. - Том III. - С. 311-314, DOI 10.25680/6852.2018.29.22.258 . - ISBN 978-5-9238-0249-8
   Перевод заглавия: A Model of the Dynamics of the Frozen Soil Depth in Bog-Lake Landscapes
Аннотация: Теоретическое описание температурного поля в почвах при их промерзании или оттаивании осуществляется с помощью решений задач Стефана. Математическая модель основывается на уравнениях теплопроводности для мерзлых и талых слоев. Рассматриваются территории, на которых имеются озера или болота. Выделяются следующие слои в вертикальной структуре зоны вечной мерзлоты: талый грунт, мерзлый грунт, вода, лед, снег. Предлагается упрощенный численный алгоритм решения одномерных (в вертикальном направлении) задач теплопроводности с подвижными границами фазового перехода с образованием новых и аннулированием существующих слоев.
The theoretical description of temperature fields in soils during freezing or thawing is carried out using solutions of Stefan's problem. We developed a mathematical model based on the equations of thermal conductivity for frozen and thawed layers. Those areas in which are lakes or bogs were considered. We distinguished between following layers in the vertical structure of the zone of permafrost: thawed soil, frozen soil, water, ice, snow. We offer a simplified numerical algorithm for solving of onedimensional (in the vertical direction) heat conduction problems with moving boundaries of phase transition with the formation of new and cancellation of existing layers.

РИНЦ,
Источник статьи

Держатели документа:
Институт вычислительного моделирования

Доп.точки доступа:
Белолипецкий, Виктор М.; Генова, Светлана Н.
Нет сведений об экземплярах (Источник в БД не найден)

[Текст] : статья / В. М. Белолипецкий, С. Н. Генова // Решетневские чтения. - 2018. - Т. 1, № 22. - С. 558-559 . - ISSN 1990-7702
   Перевод заглавия: ONE-DIMENSIONAL MODEL OF METHANE EMISSION IN PERMAFROST ZONES

УДК

519.6

Аннотация: Рассмотрена одномерная модель вертикальных распределений температуры в талых и мерзлых слоях и модель генерации диффузии метана, позволяющая получить грубую оценку эмиссии метана в зонах вечной мерзлоты.
The one-dimensional model of vertical distributions of temperature in thawed and frozen layers and the methane diffusion generation model allowing to receive a rough estimate of methane emission in permafrost zones is considered.

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Белолипецкий, В.М.; Belolipetskii V.M.; Генова, С.Н.; Genova S.N.