Direct stochastic simulation of a rarefied gas flow in channels of variable cross section

IF 0.5 4区工程技术 Q4 ENGINEERING, AEROSPACE

Thermophysics and Aeromechanics Pub Date : 2024-03-20 DOI:10.1134/S0869864323060070

A. O. Sazhin, O. V. Sazhin

引用次数: 0

Abstract

Rarefied gas flow into a vacuum through short linearly diverging and converging channels has been examined with the direct simulation Monte Carlo method. Solution to the problem has been suggested using complete geometric setup with quite large areas on inlet and outlet of a model channel in examined geometry. A mass flow rate through the channel and flow field both inside the channel and upstream and downstream have been calculated in a wide range of gas rarefaction. These calculation results are comparable to corresponding data for the channel with constant cross section. A strong impact of channel geometry and gas rarefaction has been proved.

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变截面通道中稀薄气体流动的直接随机模拟

摘要采用直接模拟蒙特卡罗方法研究了稀薄气体流经短的线性发散和会聚通道进入真空的情况。在研究的几何模型通道的入口和出口处有相当大的面积，通过完整的几何设置提出了解决问题的方法。在较大的气体稀释范围内，计算了通过通道的质量流量以及通道内部和上下游的流场。这些计算结果与恒定截面通道的相应数据具有可比性。事实证明，通道几何形状和气体稀释有很大影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thermophysics and Aeromechanics THERMODYNAMICS-MECHANICS

CiteScore

0.90

自引率

40.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal Thermophysics and Aeromechanics publishes original reports, reviews, and discussions on the following topics: hydrogasdynamics, heat and mass transfer, turbulence, means and methods of aero- and thermophysical experiment, physics of low-temperature plasma, and physical and technical problems of energetics. These topics are the prior fields of investigation at the Institute of Thermophysics and the Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), which are the founders of the journal along with SB RAS. This publication promotes an exchange of information between the researchers of Russia and the international scientific community.