Mathematical simulation of the Kelvin—Helmholtz instability using the method of large particles

Turbulence, Atmosphere and Climate Dynamics

生态环境科学

Kosyakov, S.I.^1 ; Kulichkov, S.N.^1^2 ; Chkhetiani, O.G.^1 ; Tsybulskaya, N.D.^1

A.M. Obukhov Institute of Atmospheric Physics RAS, Pyzhevskii 3, Moscow

119017, Russia^1

Moscow State University, Faculty of Physics, Moscow

119991, Russia^2

关键词: Analytical calculation;    Calculation results;    Compressible gas;    Different densities;    Kelvin- helmholtz instabilities;    Mathematical simulations;    Numerical solution;    Tangential velocities;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/231/1/012028/pdf
DOI  :  10.1088/1755-1315/231/1/012028

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The simplest shear flow - a two-dimensional (plane) nonstationary mixing layer - is considered. Results obtained from the direct numerical simulation of mixing at the boundary between two compressible gases (of different densities) moving with a tangential velocity shear in the field of strong external acceleration are described. The simulation was performed using the well-known method of large particles for a two-dimensional case. The reliability of calculation results is supported by their comparison with analytical calculations, results obtained from the numerical solution of a similar problem, and experimental data.