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Numerical simulation of the dynamics of non-zero buoyancy turbulent mixing zone in a linearly stratified medium Full article

Journal Thermophysics and Aeromechanics
ISSN: 0869-8643
Output data Year: 2022, Volume: 29, Number: 2, Pages: 167-178 Pages count : 12
Tags zone of turbulent mixing of non-zero buoyancy, linearly stratified medium, semi-empirical models of turbulence, numerical modelling
Authors Moshkin N.P. 1,2 , Fomina A.V. 3 , Chernykh G.G. 3,4
Affiliations
1 Lavrentyev Institute of Hydrodynamics
2 Novosibirsk State University
3 Kuzbass Humanitarian Pedagogical Institute of the Kemerovo State University, Novokuznetsk, Russia
4 Federal Research Center for Information and Computational Technologies, No-vosibirsk, Russia

Abstract: A numerical model of the dynamics of a flat localized region of turbulent perturbations of non-zero buoyancy in a linearly stratified medium has been developed on the basis of the mathematical model, including differential equations for Reynolds stresses transfer and algebraic model of a turbulent flux vector of a scalar. The evolution of a heated tur-bulent spot has been considered. The non-zero buoyancy is the reason of an increase in the geometrical size of the turbulent spot and generation of internal waves of greater amplitude. The generation of the total energy of turbulence is insignificant even in the case when the initial potential energy of a turbulent spot of non-zero buoyancy is comparable to the initial total energy of turbulence in it.
Cite: Moshkin N.P. , Fomina A.V. , Chernykh G.G.
Numerical simulation of the dynamics of non-zero buoyancy turbulent mixing zone in a linearly stratified medium
Thermophysics and Aeromechanics. 2022. V.29. N2. P.167-178. РИНЦ
Original: Мошкин Н.П. , Фомина А.В. , Черных Г.Г.
Численное моделирование динамики зоны турбулентного смешения ненулевой плавучести в линейно стратифицированной среде
ТЕПЛОФИЗИКА И АЭРОМЕХАНИКА. 2022. Т.29. №2. С.175-186. РИНЦ
Identifiers:
Elibrary: 50384752
Citing: Пока нет цитирований