Rarefied planar jets into vacuum  

作　　者：Chunpei Cai Limei Wang 

机构地区：[1]Department of Mechanical and Aerospace Engineering, New Mexico State University Las, Cruces 88003,New Mexico, USA

出　　处：《Theoretical & Applied Mechanics Letters》2012年第1期62-66,共5页力学快报（英文版）

基　　金：supported by NASA(NNX0gCF71P);NSF(CBET-0854411)

摘　　要：This paper presents a fundamental gaskinetic study on high speed rarefied jets expanding into vacuum from a cluster of planar exits.Based on the corresponding exact expressions for one planar jet,this paper straightforwardly derives the combined multiple jet flowfield solutions of density and velocity components,however,for the combined temperature and pressure solutions,extra attention shall be practiced.Several direct simulation Monte Carlo simulation results are provided and they validate these analytical solutions of rarefied planar jet flows.This paper presents a fundamental gaskinetic study on high speed rarefied jets expanding into vacuum from a cluster of planar exits. Based on the corresponding exact expressions for one planar jet, this paper straightforwardly derives the combined multiple jet flowfield solutions of density and velocity components, however, for the combined temperature and pressure solutions, extra attention shall be practiced. Several direct simulation Monte Carlo simulation results are provided and they validate these analytical solutions of rarefied planar jet flows.

关 键 词：rarefied flows JET molecular beams VACUUM Monte Carlo method 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程] O358[理学—流体力学]