Test Particle Monte Carlo Simulation of Return Flux on Various geometric surfaces due to Ambient Scatter of Outgassing Molecules

摘要：

　　The test particle Monte Carlo(TPMC)method is delineated by taking the molecular return flux problem for the flow past a complete sphere as an example and the return flux on a variety of geometric surfaces,including a complete sphere,a circle flat plate,a convex and concave hemisphere,due to ambient scatter of outgassing molecules is simulated by this method.The return flux ratio(RFR)obtained here for the flow past a sphere is in good agreement with previous results.Then,effects of various outgassing and freestream conditions on RFR for flows past three geometric bodies,including a circle flat plate,a convex and concave hemisphere,have been investigated and compared.Moreover,heuristic arguments about geometric,outgassing and freestream governing parameters provide theoretical references for the evaluation and control of return flux contamination.

关键词： outgassing molecules ambient scatter return flux test particle Monte Carlo hemisphere

作者: Xuhong Jin Fei Huang Zhi Chen Xiaoli Cheng

作者单位: China Academy of Aerospace Aerodynamics,Beijing,100074,China

会议类型: 国际会议

会议名称: 2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)

会议地点: 上海

会议语种:英文

页码: 1-6

在线出版日期: 2014-09-24（万方平台首次上网日期，不代表论文的发表时间）