Evolution to a steady state for a rarefied gas flowing from a tank into a vacuum through a plane channel
- 作者: Konopel’ko N.A.1, Shakhov E.M.2,3
-
隶属关系:
- Moscow Institute of Physics and Technology, Dolgoprudnyi
- Bauman Moscow State Technical University
- Dorodnicyn Computing Center, Federal Research Center “Computer Science and Control,”
- 期: 卷 57, 编号 10 (2017)
- 页面: 1695-1705
- 栏目: Article
- URL: https://journal-vniispk.ru/0965-5425/article/view/179467
- DOI: https://doi.org/10.1134/S0965542517100098
- ID: 179467
如何引用文章
详细
A kinetic equation (S-model) is used to solve the nonstationary problem of a monatomic rarefied gas flowing from a tank of infinite capacity into a vacuum through a long plane channel. Initially, the gas is at rest and is separated from the vacuum by a barrier. The temperature of the channel walls is kept constant. The flow is found to evolve to a steady state. The time required for reaching a steady state is examined depending on the channel length and the degree of gas rarefaction. The kinetic equation is solved numerically by applying a conservative explicit finite-difference scheme that is firstorder accurate in time and second-order accurate in space. An approximate law is proposed for the asymptotic behavior of the solution at long times when the evolution to a steady state becomes a diffusion process.
作者简介
N. Konopel’ko
Moscow Institute of Physics and Technology, Dolgoprudnyi
编辑信件的主要联系方式.
Email: konopelkon@gmail.com
俄罗斯联邦, Moscow oblast, 141700
E. Shakhov
Bauman Moscow State Technical University; Dorodnicyn Computing Center, Federal Research Center “Computer Science and Control,”
Email: konopelkon@gmail.com
俄罗斯联邦, Moscow, 107005; Moscow, 119333
补充文件
