Open AccessNumerical simulation of the Rayleigh-Taylor instability in rarefied Ar/He mixture using the Direct Simulation Monte Carlo method
Author(s) -
A. V. Kashkovsky,
A. N. Kudryavtsev,
A. A. Shershnev
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1382/1/012154
Subject(s) - rayleigh–taylor instability , instability , monte carlo method , richtmyer–meshkov instability , mechanics , statistical physics , rayleigh scattering , physics , direct numerical simulation , computer simulation , mixing (physics) , mathematics , optics , turbulence , statistics , reynolds number , quantum mechanics
The Direct Simulation Monte Carlo method is used to study the emergence and development of the Rayleigh-Taylor instability. At the initial time, the heavier gas (argon) was located above the lighter gas (helium). In the simulation, no initial perturbations were superimposed on the interface, the appearance of instability was caused by fluctuations of gas- dynamic parameters that are inherent in the Direct Simulation Monte Carlo calculations. The onset of large-scale movement and mixing processes are investigated. Quantitative characteristics of the evolution of the Rayleigh-Taylor instability in a rarefied mode are obtained.