National Aerospace Laboratory
National Aerospace Laboratory
Facom-Hitac Co. Ltd.
出版者
航空宇宙技術研究所
出版者（英）
National Aerospace Laboratory(NAL)
雑誌名
航空宇宙技術研究所特別資料
雑誌名(英)
Special Publication of National Aerospace Laboratory SP-9
巻
9
ページ
183 - 186
発行年
1988-12
抄録（英）
The "rarefied gas numerical wind tunnel" (RGNWT) for the simulation of rarefied gas flows around three-dimensional space vehicles is under construction. The RGNWT consists of the universal code described using the null-collision (NC) direct-simulation Monte Carlo method and the software for the grid generation and graphic display. In order to ascertain the feasibility of the RGNWT, quantitative comparisons between the NC and time-counter (TC) direct-simulation Monte Carlo methods are made for the shock wave structure and leading-edge flow. It is shown in the leading-edge flow that the NC method is stronger to the small number of simulation molecules than the TC method; the lower limit of the number of simulation molecules for the NC method is less than one third of that for the TC method. The computation time for the NC method is comparable to that for the TC method for the same number of simulation molecules.
Rarefied Gas Numerical Wind Tunnel IV
nalsp0009027.pdf
(878.58KB)
