[Text] : статья / O.V. Kaptsov, A.V. Schmidt // Symmetry Integr.Geom. Methods Appl. - 2012. - Vol. 8. - Ст. 073DOI 10.3842/SIGMA.2012.073
. -
Полный текст
Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44
Доп.точки доступа:
Schmidt, A.V.; Шмидт, Алексей Владимирович; Капцов, Олег Викторович
Труды сотрудников ИВМ СО РАН
w10=
Найдено документов в текущей БД: 13
Self-similar degeneration of the turbulent wake behind a body towed in a passively stratified medium
/ O.V. Kaptsov [et al.] // J. Appl. Mech. Tech. Phys. - 2012. - Vol. 53, Is. 5. - pp. 672-678, DOI 10.1134/S0021894412050069. - Cited References: 16. - This work was supported by the Russian Foundation for Basic Research (Grants Nos. 10-01-00435-a and 11-01-09368-mob_z), by the Council on Grants of the President of the Russian Federation for Support of Leading Scientific Schools (Grants Nos. NSh-544.2012.1 and NSh-6293.2012.9), and by the Russian Academy of Sciences (Integration Project No. 103 (Siberian, Far-East, and Ural Branches)).
. - 7. - ISSN 0021-8944
РУБ Mechanics + Physics, Applied
Аннотация: A mathematical model of the far turbulent wake behind a towed body in a passively stratified medium, based on the known semi-empirical e-E > model of turbulence, is considered. A grouptheoretical analysis of the model is performed. With the help of the method of B-determining equations, the model is reduced to a system of ordinary differential equations, which is solved numerically. The resultant solution is compared with a self-similar solution obtained by direct numerical integration of the differential equations at large distances from the body.
Доп.точки доступа:
Kaptsov, O.V.; Капцов, Олег Викторович; Fomina, A.V.; Chernykh, G.G.; Schmidt, A.V.; Шмидт, Алексей Владимирович
Рубрики:
DYNAMICS
Кл.слова (ненормированные):
mathematical model of the far turbulent wake -- towed body of revolution -- passively stratified medium -- e-epsilon model of turbulence -- group-theoretical analysis -- method of B-determining equations -- self-similar degeneration
DYNAMICS
Кл.слова (ненормированные):
mathematical model of the far turbulent wake -- towed body of revolution -- passively stratified medium -- e-epsilon model of turbulence -- group-theoretical analysis -- method of B-determining equations -- self-similar degeneration
Аннотация: A mathematical model of the far turbulent wake behind a towed body in a passively stratified medium, based on the known semi-empirical e-E > model of turbulence, is considered. A grouptheoretical analysis of the model is performed. With the help of the method of B-determining equations, the model is reduced to a system of ordinary differential equations, which is solved numerically. The resultant solution is compared with a self-similar solution obtained by direct numerical integration of the differential equations at large distances from the body.
Доп.точки доступа:
Kaptsov, O.V.; Капцов, Олег Викторович; Fomina, A.V.; Chernykh, G.G.; Schmidt, A.V.; Шмидт, Алексей Владимирович
Roche lobe effects on expanded upper atmospheres of short-periodic giant exoplanets
[Text] / G. F. Jaritz [et al.] // Astron. Astrophys. - 2005. - Vol. 439, Is. 2. - P771-775, DOI 10.1051/0004-6361:20052946. - Cited References: 32
. - ISSN 0004-6361
РУБ Astronomy & Astrophysics
Аннотация: Theoretical studies and recent observational evidence of the expansion of the atmospheres of short-periodic exoplanets show that the atmospheres extend up to several planetary radii. This indicates that the atmospheres experience blow-off conditions. Because of the short orbital distance to their host stars, the expansion of the upper atmosphere is no longer radially symmetric, but depends on the direction to the central body, resulting in a deformation of the expanded atmosphere. We show the connection between atmospheric expansion, tidal forces and effects of the Roche potential and find that HD209458 b, OGLE-TR-10 b and OGLE-TR-111 b are most likely in a state of classical hydrodynamical blow-off because the distance where blow-off can occur is less than the distance to the Lagrangian point L1. On the other hand, OGLE-TR-56 b, OGLE-TR-113 b, OGLE-TR-132 b and TreS-1 experience a geometrical blow-off defined by the Roche lobe as proposed by Lecavelier des Etangs et al. (2004, A&A, 418, L1). Our results have important implications for the evolution of short periodic gas giants, because the Roche lobe overflow of the atmosphere can lead to lower mass loss rates over the exoplanets history, compared to gas giants which experience hydrodynamic expansion and loss unaffected by this boundary. Thus, massive exoplanets like OGLE-TR-56 b in very close orbital distances are subject to geometrical blow-off conditions, this results in a total mass loss for this particular exoplanet of the order of about 3 x 10(-2) M-pl over the planets age, even if current mass loss rates of about 2 x 10(11) g s(-1) are calculated. If the exoplanet effected by the geometrical blow-off is more massive, the mass loss rate is even lower. However, giant exoplanets like HD209458 b, OGLE-TR-10 b and OGLE-TR-111 b at orbital distances of about 0.05 AU may experience classical hydrodynamic blow-off conditions, which can result in higher mass loss rates. Thus, such planets may shrink to their core sizes during the X-ray and EUV active periods of their host stars as proposed by Lammer et al. ( 2003, ApJ, L121, 598) and Bara. e et al. (2004, A& A, 419, L13).
Доп.точки доступа:
Jaritz, G.F.; Endler, S.; Langmayr, D.; Lammer, H.; Griessmeier, J.M.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.
Рубрики:
TRANSITING PLANET OGLE-TR-56B
HOT JUPITERS
EXTRASOLAR PLANET
EVOLUTION
ESCAPE
STAR
MASS
Кл.слова (ненормированные):
radiation mechanisms : non-thermal -- acceleration of particles -- plasmas -- turbulence -- gamma rays : theory -- methods : analytical
TRANSITING PLANET OGLE-TR-56B
HOT JUPITERS
EXTRASOLAR PLANET
EVOLUTION
ESCAPE
STAR
MASS
Кл.слова (ненормированные):
radiation mechanisms : non-thermal -- acceleration of particles -- plasmas -- turbulence -- gamma rays : theory -- methods : analytical
Аннотация: Theoretical studies and recent observational evidence of the expansion of the atmospheres of short-periodic exoplanets show that the atmospheres extend up to several planetary radii. This indicates that the atmospheres experience blow-off conditions. Because of the short orbital distance to their host stars, the expansion of the upper atmosphere is no longer radially symmetric, but depends on the direction to the central body, resulting in a deformation of the expanded atmosphere. We show the connection between atmospheric expansion, tidal forces and effects of the Roche potential and find that HD209458 b, OGLE-TR-10 b and OGLE-TR-111 b are most likely in a state of classical hydrodynamical blow-off because the distance where blow-off can occur is less than the distance to the Lagrangian point L1. On the other hand, OGLE-TR-56 b, OGLE-TR-113 b, OGLE-TR-132 b and TreS-1 experience a geometrical blow-off defined by the Roche lobe as proposed by Lecavelier des Etangs et al. (2004, A&A, 418, L1). Our results have important implications for the evolution of short periodic gas giants, because the Roche lobe overflow of the atmosphere can lead to lower mass loss rates over the exoplanets history, compared to gas giants which experience hydrodynamic expansion and loss unaffected by this boundary. Thus, massive exoplanets like OGLE-TR-56 b in very close orbital distances are subject to geometrical blow-off conditions, this results in a total mass loss for this particular exoplanet of the order of about 3 x 10(-2) M-pl over the planets age, even if current mass loss rates of about 2 x 10(11) g s(-1) are calculated. If the exoplanet effected by the geometrical blow-off is more massive, the mass loss rate is even lower. However, giant exoplanets like HD209458 b, OGLE-TR-10 b and OGLE-TR-111 b at orbital distances of about 0.05 AU may experience classical hydrodynamic blow-off conditions, which can result in higher mass loss rates. Thus, such planets may shrink to their core sizes during the X-ray and EUV active periods of their host stars as proposed by Lammer et al. ( 2003, ApJ, L121, 598) and Bara. e et al. (2004, A& A, 419, L13).
Доп.точки доступа:
Jaritz, G.F.; Endler, S.; Langmayr, D.; Lammer, H.; Griessmeier, J.M.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.
Similarity reduction of a three-dimensional model of the far turbulent wake behind a towed body
[Text] : тезисы / A.V. Schmidt // 13 European turbulence conference. - Warsaw, 2011. - p. 149
Доп.точки доступа:
Шмидт, Алексей Владимирович
Доп.точки доступа:
Шмидт, Алексей Владимирович
Numerical analysis of pollutant transport in upper turbulent layers of seas and oceans
/ N. V. Dmitriev, E. A. Dvurechenskaya // Meteorologiya i Gidrologiya. - 1994. - Is. 12. - P53-62
. - ISSN 0130-2906
Кл.слова (ненормированные):
Computer simulation -- Flow of fluids -- Fluid dynamics -- Hydrodynamics -- Mathematical models -- Numerical analysis -- Oceanography -- Seawater -- Thermodynamics -- Turbulence -- Pollutant transfer -- Water pollution
Аннотация: Two mathematical models of admixture dispersion in a surface turbulent layer of the pool are considered. All hydrodynamic characteristics required for the models are determined using a thermodynamic model of the horizontally homogeneous upper turbulent layer of the ocean. Numerical experiments have been performed to estimate the influence of stratification on the admixture diffusion. The advantages and drawbacks of the models are discussed. The importance of consideration of the influence of stratification on admixture diffusion is shown.
Scopus
Держатели документа:
Vychislitel'nyj Tsentr SO RAN, Krasnoyarsk, Russian Federation
ИВМ СО РАН
Доп.точки доступа:
Dmitriev, N.V.; Dvurechenskaya, E.A.
Кл.слова (ненормированные):
Computer simulation -- Flow of fluids -- Fluid dynamics -- Hydrodynamics -- Mathematical models -- Numerical analysis -- Oceanography -- Seawater -- Thermodynamics -- Turbulence -- Pollutant transfer -- Water pollution
Аннотация: Two mathematical models of admixture dispersion in a surface turbulent layer of the pool are considered. All hydrodynamic characteristics required for the models are determined using a thermodynamic model of the horizontally homogeneous upper turbulent layer of the ocean. Numerical experiments have been performed to estimate the influence of stratification on the admixture diffusion. The advantages and drawbacks of the models are discussed. The importance of consideration of the influence of stratification on admixture diffusion is shown.
Scopus
Держатели документа:
Vychislitel'nyj Tsentr SO RAN, Krasnoyarsk, Russian Federation
ИВМ СО РАН
Доп.точки доступа:
Dmitriev, N.V.; Dvurechenskaya, E.A.
Reynolds-averaged modeling of turbulent flows of power-law fluids
[Text] / A. A. Gavrilov, V. Y. Rudyak // J. Non-Newton. Fluid Mech. - 2016. - Vol. 227. - P45-55, DOI 10.1016/j.jnnfm.2015.11.006. - Cited References:24. - This work was supported by the Russian Scientific Foundation (Contract no. 14-19-00312).
. - ISSN 0377-0257. - ISSN 1873-2631
РУБ Mechanics
Аннотация: The paper presents a novel Reynolds-averaged turbulence model for flows of power-law fluid. The model uses the elliptic relaxation approach to capture the near-wall turbulence anisotropy. The turbulence model for Newtonians fluids is modified by introducing closed approximations of correlations between velocity and viscosity fluctuations. The approximation for non-Newtonian extra stress is derived with the assumption of smallness of molecular viscosity fluctuations. A closed model for the averaged molecular viscosity is derived which takes into account its nonlinear dependence on the shear rate. Validation of the model against the direct numerical simulation (DNS) data for power-law fluids flows in the pipe demonstrates that new model is able to predict the main features of the non-Newtonian turbulence. Mean velocity, turbulent energy and averaged molecular viscosity distributions agree well with DNS data. (c) 2015 Published by Elsevier B.V.
WOS
Держатели документа:
ICM SB RAS, Inst Thermophys SB RAS, Krasnoyarsk Branch, 50-44 Akad Gorodok, Krasnoyarsk 660036, Russia.
Novosibirsk State Univ Architecture & Civil Engn, 113 Leningradskaya Str, Novosibirsk 630008, Russia.
Доп.точки доступа:
Gavrilov, Andrey A.; Rudyak, Valeriy Ya; Russian Scientific Foundation [14-19-00312]
Рубрики:
DRAG-REDUCING FLUIDS
PIPE-FLOW
NEWTONIAN FLUIDS
NEAR-WALL
EPSILON
Кл.слова (ненормированные):
Shear-thinning fluids -- Power-Law fluid -- Turbulence model -- RANS modeling
DRAG-REDUCING FLUIDS
PIPE-FLOW
NEWTONIAN FLUIDS
NEAR-WALL
EPSILON
Кл.слова (ненормированные):
Shear-thinning fluids -- Power-Law fluid -- Turbulence model -- RANS modeling
Аннотация: The paper presents a novel Reynolds-averaged turbulence model for flows of power-law fluid. The model uses the elliptic relaxation approach to capture the near-wall turbulence anisotropy. The turbulence model for Newtonians fluids is modified by introducing closed approximations of correlations between velocity and viscosity fluctuations. The approximation for non-Newtonian extra stress is derived with the assumption of smallness of molecular viscosity fluctuations. A closed model for the averaged molecular viscosity is derived which takes into account its nonlinear dependence on the shear rate. Validation of the model against the direct numerical simulation (DNS) data for power-law fluids flows in the pipe demonstrates that new model is able to predict the main features of the non-Newtonian turbulence. Mean velocity, turbulent energy and averaged molecular viscosity distributions agree well with DNS data. (c) 2015 Published by Elsevier B.V.
WOS
Держатели документа:
ICM SB RAS, Inst Thermophys SB RAS, Krasnoyarsk Branch, 50-44 Akad Gorodok, Krasnoyarsk 660036, Russia.
Novosibirsk State Univ Architecture & Civil Engn, 113 Leningradskaya Str, Novosibirsk 630008, Russia.
Доп.точки доступа:
Gavrilov, Andrey A.; Rudyak, Valeriy Ya; Russian Scientific Foundation [14-19-00312]
A three-dimensional semi-empirical model of a far turbulent wake
[Text] / O. V. Kaptsov, A. V. Shmidt // Pmm-J. Appl. Math. Mech. - 2015. - Vol. 79, Is. 5. - P459-466, DOI 10.1016/j.jappmathmech.2016.03.007. - Cited References:21. - This research was supported by the Government of the Russian Federation for carrying out investigations under the guidance of leading scientists at the Siberian Federal University (14.Y26.31.0006), the Russian Foundation for Basic Research (13-01-00246) and the Program for the State Support of Leading Scientific Schools (NSh-4382.2014.1).
. - ISSN 0021-8928. - ISSN 1873-4855
РУБ Mathematics, Applied + Mechanics
Аннотация: A three-dimensional semi-empirical model of turbulence in the approximation of a far wake behind an axisymmetric self-propelled body is considered. The required quantities are the kinetic energy of the turbulence, the rate of dissipation of the kinetic energy of the turbulence, the mean density defect and the density fluctuation dispersion. A group-theoretic analysis is performed on the system of ordinary differential equations which is solved numerically. The solutions constructed are in good agreement with experimental data. (C) 2016 Elsevier Ltd. All rights reserved.
WOS,
Смотреть статью
Держатели документа:
Russsian Acad Sci, Siberian Branch, Inst Comp Modeling, Krasnoyarsk, Russia.
Доп.точки доступа:
Kaptsov, O. V.; Shmidt, A. V.; Government of the Russian Federation [14.Y26.31.0006]; Russian Foundation for Basic Research [13-01-00246]; Program for the State Support of Leading Scientific Schools [NSh-4382.2014.1]
Аннотация: A three-dimensional semi-empirical model of turbulence in the approximation of a far wake behind an axisymmetric self-propelled body is considered. The required quantities are the kinetic energy of the turbulence, the rate of dissipation of the kinetic energy of the turbulence, the mean density defect and the density fluctuation dispersion. A group-theoretic analysis is performed on the system of ordinary differential equations which is solved numerically. The solutions constructed are in good agreement with experimental data. (C) 2016 Elsevier Ltd. All rights reserved.
WOS,
Смотреть статью
Держатели документа:
Russsian Acad Sci, Siberian Branch, Inst Comp Modeling, Krasnoyarsk, Russia.
Доп.точки доступа:
Kaptsov, O. V.; Shmidt, A. V.; Government of the Russian Federation [14.Y26.31.0006]; Russian Foundation for Basic Research [13-01-00246]; Program for the State Support of Leading Scientific Schools [NSh-4382.2014.1]
532.517.4
Д466
Д466
Динамика заглубления перемешанного слоя жидкости в трехмерных расчетах
[Текст] : статья / Лидия Алексеевна Компаниец, Татьяна Валерьевна Якубайлик, Людмила Владимировна Гаврилова // Образовательные ресурсы и технологии. - 2016. - № 2. - С. 404-409
. - ISSN 2312-5500
Перевод заглавия: Dynamics of fluid mixed layer penetration in 3d calculations
Кл.слова (ненормированные):
трехмерное численное моделирование -- турбулентное замыкание -- заглубление перемешанного слоя -- three-dimensional numerical simulation -- Turbulent closure -- mixed layer penetration
Аннотация: С использованием трехмерной численной модели выполнены расчеты заглубления перемешанного слоя под действием ветровой нагрузки в стратифицированном водоеме прямоугольной формы. Проведено сравнение результатов для различных моделей турбулентности
The wind-influenced deepening of the mixed layer in a stratified rectangular reservoir has been calculated using three-dimensional numerical model. A comparison of results has been made for various turbulence models
РИНЦ
Держатели документа:
ФГАОУ ВО "Сибирский федеральный университет"
ФГБУН ИВМ СО РАН
Доп.точки доступа:
Якубайлик, Татьяна Валерьевна; Yakubaylik T.V.; Гаврилова, Людмила Владимировна; Gavrilova Lyudmila Vladimirovna; Kompaniets L.A.
Перевод заглавия: Dynamics of fluid mixed layer penetration in 3d calculations
| УДК |
Кл.слова (ненормированные):
трехмерное численное моделирование -- турбулентное замыкание -- заглубление перемешанного слоя -- three-dimensional numerical simulation -- Turbulent closure -- mixed layer penetration
Аннотация: С использованием трехмерной численной модели выполнены расчеты заглубления перемешанного слоя под действием ветровой нагрузки в стратифицированном водоеме прямоугольной формы. Проведено сравнение результатов для различных моделей турбулентности
The wind-influenced deepening of the mixed layer in a stratified rectangular reservoir has been calculated using three-dimensional numerical model. A comparison of results has been made for various turbulence models
РИНЦ
Держатели документа:
ФГАОУ ВО "Сибирский федеральный университет"
ФГБУН ИВМ СО РАН
Доп.точки доступа:
Якубайлик, Татьяна Валерьевна; Yakubaylik T.V.; Гаврилова, Людмила Владимировна; Gavrilova Lyudmila Vladimirovna; Kompaniets L.A.
Self-similar solutions for a semi-empiricalsecond-order turbulence model of a roundsubmerged jet
[Text] : abstract / O. V. Kaptsov, A. V. Shmidt // Abstarcts of Russian-French Workshop «Mathematical Hydrodynamics». - Novosibirsk : Novosibirsk state university, 2016. - P32
Доп.точки доступа:
Shmidt, A.V.; Шмидт, Алексей Владимирович; Капцов, Олег Викторович
Доп.точки доступа:
Shmidt, A.V.; Шмидт, Алексей Владимирович; Капцов, Олег Викторович
532.517.4
И 58
И 58
Инвариантные решения модели дальнего закрученного безымпульсного турбулентного следа за телом
[Текст] : статья / А. В. Шмидт // Решетневские чтения. - 2017. - № 21-2. - С. 92
. - ISSN 1990-7702
Перевод заглавия: A model invariant solutions of the distant swirling momentumless turbulent wake
Кл.слова (ненормированные):
турбулентность -- закрученный безымпульсный турбулентный след -- математическое моделирование -- turbulence -- swirling momentumless turbulent wake -- mathematical modelling
Аннотация: Построены инвариантные решения модели дальнего закрученного безымпульсного турбулентного следа за телом вращения. Проведено сопоставление с имеющимися экспериментальными данными и результатами численных расчетов по полной модели.
We construct a model invariant solutions of the distant swirling momentumless turbulent wake. We perform a comparison with available experimental data and results of numerical calculations on the full model.
РИНЦ
Держатели документа:
Красноярский научный центр СО РАН Институт вычислительного моделирования СО РАН
Доп.точки доступа:
Шмидт, А.В.; Shmidt A.V.
Перевод заглавия: A model invariant solutions of the distant swirling momentumless turbulent wake
| УДК |
Кл.слова (ненормированные):
турбулентность -- закрученный безымпульсный турбулентный след -- математическое моделирование -- turbulence -- swirling momentumless turbulent wake -- mathematical modelling
Аннотация: Построены инвариантные решения модели дальнего закрученного безымпульсного турбулентного следа за телом вращения. Проведено сопоставление с имеющимися экспериментальными данными и результатами численных расчетов по полной модели.
We construct a model invariant solutions of the distant swirling momentumless turbulent wake. We perform a comparison with available experimental data and results of numerical calculations on the full model.
РИНЦ
Держатели документа:
Красноярский научный центр СО РАН Институт вычислительного моделирования СО РАН
Доп.точки доступа:
Шмидт, А.В.; Shmidt A.V.
532.517.4
А 22
А 22
Автомодельные решения одной модели дальнего закрученного безымпульсного турбулентного следа с компенсацией по моменту
[Текст] : доклад, тезисы доклада / А. В. Шмидт // Пермские гидродинамические научные чтения : сборник материалов V Всероссийской конференции с международным участием, посвященной памяти профессоров Г. З. Гершуни, Е. М. Жуховицкого и Д. В. Любимова / Пермские гидродинамические научные чтения (2018 ; 26.09 - 29.09 ; Пермь) : Пермский государственный национальный исследовательский университет, 2018
. - ISBN 978-5-7944-3158-2
Перевод заглавия: Self-similar solutions to one model of the far swirling momentumless turbulent wake with a compensation of the angular momentum
Кл.слова (ненормированные):
turbulence -- swirling momentumless turbulent wake -- mathematical modelling -- турбулентность -- закрученный безымпульсный турбулентный след -- математическое моделирование
Аннотация: Построены автомодельные решения уравнений модели дальнего закрученного безымпульсного турбулентного следа за телом вращения с компенсацией по моменту. Краевая задача для редуцированной системы решалась модифицированным методом стрельбы, кроме того, использовалось асимптотическое разложение решения в окрестности особой точки. Проведено сопоставление с доступными экспериментальными данными и результатами численных расчетов по полной модели.
Self-similar solutions to one model of the far swirling momentumless turbulent wake behind a body of revolution with a compensation of the angular momentum was constructed. A boundary-value problem for the reduced system was solved numerically. We used the modified shooting method and the asymptotic expansion of the solution in a vicinity of the singular point. A comparison with the available experimental data and results of numerical calculations on the full model was conducted.
РИНЦ,
Источник статьи
Держатели документа:
Институт вычислительного моделирования СО РАН
Доп.точки доступа:
Шмидт, А.В.; Shmidt A.V.; Пермские гидродинамические научные чтения(2018 ; 26.09 - 29.09 ; Пермь)
Нет сведений об экземплярах (Источник в БД не найден)
Перевод заглавия: Self-similar solutions to one model of the far swirling momentumless turbulent wake with a compensation of the angular momentum
| УДК |
Кл.слова (ненормированные):
turbulence -- swirling momentumless turbulent wake -- mathematical modelling -- турбулентность -- закрученный безымпульсный турбулентный след -- математическое моделирование
Аннотация: Построены автомодельные решения уравнений модели дальнего закрученного безымпульсного турбулентного следа за телом вращения с компенсацией по моменту. Краевая задача для редуцированной системы решалась модифицированным методом стрельбы, кроме того, использовалось асимптотическое разложение решения в окрестности особой точки. Проведено сопоставление с доступными экспериментальными данными и результатами численных расчетов по полной модели.
Self-similar solutions to one model of the far swirling momentumless turbulent wake behind a body of revolution with a compensation of the angular momentum was constructed. A boundary-value problem for the reduced system was solved numerically. We used the modified shooting method and the asymptotic expansion of the solution in a vicinity of the singular point. A comparison with the available experimental data and results of numerical calculations on the full model was conducted.
РИНЦ,
Источник статьи
Держатели документа:
Институт вычислительного моделирования СО РАН
Доп.точки доступа:
Шмидт, А.В.; Shmidt A.V.; Пермские гидродинамические научные чтения(2018 ; 26.09 - 29.09 ; Пермь)
Нет сведений об экземплярах (Источник в БД не найден)
Self-Similar Solutions of the Model k - for a Turbulent Far Wake
/ A. V. Schmidt // Fluid Dyn. - 2019. - Vol. 54, Is. 2. - P239-243, DOI 10.1134/S0015462819010130. - Cited References:12. - The study was carried out with the support of the Russian Foundation for Basic Research (project no. 17-01-00332).
. - ISSN 0015-4628. - ISSN 1573-8507
РУБ Mechanics + Physics, Fluids & Plasmas
Аннотация: The semi-empirical k - turbulence model is considered in the far wake approximation. In this model the unknown quantities are the deficit of the mean velocity, the turbulent kinetic energy, and the specific energy dissipation rate. The group-theoretic analysis of the model is performed and a reduced self-similar system of ordinary differential equations is obtained and solved numerically. The calculated results are shown to be in good agreement with the available experimental data.
WOS,
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Scopus
Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Computat Modeling, Akademgorodok 50,Bldg 44, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Schmidt, A. V.; Russian Foundation for Basic Research [17-01-00332]
Аннотация: The semi-empirical k - turbulence model is considered in the far wake approximation. In this model the unknown quantities are the deficit of the mean velocity, the turbulent kinetic energy, and the specific energy dissipation rate. The group-theoretic analysis of the model is performed and a reduced self-similar system of ordinary differential equations is obtained and solved numerically. The calculated results are shown to be in good agreement with the available experimental data.
WOS,
Смотреть статью,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Computat Modeling, Akademgorodok 50,Bldg 44, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Schmidt, A. V.; Russian Foundation for Basic Research [17-01-00332]
On application of prandtl-obukhov formula in the numerical model of the turbulent layer depth dynamics
/ V. M. Belolipetskii, S. N. Genova // J. Sib. Fed. Univ. Math. Phys. - 2020. - Vol. 13, Is. 1. - P37-47, DOI 10.17516/1997-1397-2020-13-1-37-47
. - ISSN 1997-1397
Аннотация: A numerical simulation of the penetration of the turbulent layer in a stably stratified fluid under the action of tangential stress was performed. For the coefficient of vertical turbulent exchange, the Prandtl–Obukhov formula is used. The results of the calculations are consistent with known experimental data and calculations by other authors. © Siberian Federal University. All rights reserved.
Scopus,
WOS
Держатели документа:
Institute of Computational Modelling SB RAS, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Belolipetskii, V. M.; Genova, S. N.
Аннотация: A numerical simulation of the penetration of the turbulent layer in a stably stratified fluid under the action of tangential stress was performed. For the coefficient of vertical turbulent exchange, the Prandtl–Obukhov formula is used. The results of the calculations are consistent with known experimental data and calculations by other authors. © Siberian Federal University. All rights reserved.
Scopus,
WOS
Держатели документа:
Institute of Computational Modelling SB RAS, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Belolipetskii, V. M.; Genova, S. N.