Application of a Direct Method for Solving the Boltzmann Equation in Supersonic Flow Computation

被引：0
|
作者：
Aristov, V. V. [1 ]
Rovenskaya, O. I. [1 ]
机构：
[1] Russian Acad Sci, Dorodnicyn Comp Ctr, Fed Res Ctr Comp Sci & Control, Moscow 119333, Russia
来源：
COMPUTATIONAL MATHEMATICS AND MATHEMATICAL PHYSICS | 2016年 / 56卷 / 11期
基金：
俄罗斯科学基金会;
关键词：
Boltzmann kinetic equation; supersonic compressible flow; explicit-implicit difference scheme; flow instability; algorithm parallelization;
D O I：
10.1134/S0965542516110038
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
The Boltzmann kinetic equation is used to numerically study the evolution of separated flows over a backward-facing step at low Knudsen numbers. The Boltzmann equation is solved by applying an explicit-implicit scheme. To improve the efficiency of the solution algorithm, it is parallelized with the help of MPI. The solution obtained with the kinetic equation is compared with those based on continuous medium equations. It is shown that the kinetic approach makes it possible to reproduce the distributions of surface pressure, friction coefficient, and heat transfer, as well as to obtain a flow structure close to experimental data.
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页码：1938 / 1947
页数：10
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