WEKO3
アイテム
Anomalous Collision Rate in the Time Counter Scheme of the Direct Simulation Monte Carlo Method for Rarefied Gas Flow Analysis
https://jaxa.repo.nii.ac.jp/records/31420
https://jaxa.repo.nii.ac.jp/records/31420b118866a-d7db-4125-b1ff-47c7144b90b3
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA0035178.pdf (870.6 kB)
|
|
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||||
| タイトル | ||||||||
| タイトル | Anomalous Collision Rate in the Time Counter Scheme of the Direct Simulation Monte Carlo Method for Rarefied Gas Flow Analysis | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | departmental bulletin paper | |||||||
| 著者 |
ABE, Takashi
× ABE, Takashi
|
|||||||
| 出版者 | ||||||||
| 出版者 | 宇宙科学研究所 | |||||||
| 出版者（英） | ||||||||
| 出版者 | Institute of Space and Astronautical Science | |||||||
| 書誌情報 |
en : The Institute of Space and Astronautical Science report 巻 653, p. 1-14, 発行日 1994-11 |
|||||||
| 抄録（英） | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | In the direct simulation Monte Carlo method (DSMC), it is shown that a widely used time counter (TC) scheme proposed by Bird gives inaccurate results for certain non-equilibrium distribution functions. The functions are defined in the text and include as an extreme case the distribution function of the cold counter-streaming flow. When the TC scheme is applied to these distribution functions it results in counting a rate of collision too largely, and there is consequently a corresponding error in advancing the simulation time. This effect appears in functions which differ from the equilibrium one by more than a certain threshold amount. The threshold is shown to depend on the number of particles being simulated, and increases with their number. That is, the applicability of the TC scheme increases with particle numbers. A new scheme based on the collision rate is proposed to overcome the difficulty with the TC scheme. The CPU time of the new scheme is proportional to the particle numbers and is comparable to both the TC scheme and the no-time counter scheme in computation efficiency. | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0285-6808 | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA10632072 | |||||||
| 資料番号 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 資料番号: SA0035178000 | |||||||
