| Development of a Cell Size Relaxed Scheme for the Direct Simulation Monte Carlo Method | |
Sun QH(孙泉华) ; Liu HL(刘宏立); Fan J(樊菁); Sun QH
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| Source Publication | Rarefied Gas Dynamics |
| 2009 | |
| Pages | 311-316 |
| Conference Name | 26th International Symposium on Rarefied Gas Dynmaics (RGD26) |
| Conference Date | JUN 20-JUL 25, 2008 |
| Conference Place | Kyoto, JAPAN |
| Abstract | The conventional direct simulation Monte Carlo (DSMC) method has a strong restriction on the cell size because simulated particles are selected randomly within the cell for collisions. Cells with size larger than the molecular mean free path are generally not allowed in correct DSMC simulations. However, the cell-size induced numerical error can be controlled if the gradients of flow properties are properly involved during collisions. In this study, a large cell DSMC scheme is proposed to relax the cell size restriction. The scheme is applied to simulate several test problems and promising results are obtained even when the cell size is greater than 10 mean free paths of gas molecules. However, it is still necessary, of course, that the cell size be small with respect to the flow field structures that must be resolved. |
| Keyword | Direct Simulation Monte Carlo Method Cell Size Collision Scheme |
| WOS ID | WOS:000265564800050 |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/25356 |
| Collection | 高温气体动力学国家重点实验室 |
| Corresponding Author | Sun QH |
| Recommended Citation GB/T 7714 | Sun QH,Liu HL,Fan J,et al. Development of a Cell Size Relaxed Scheme for the Direct Simulation Monte Carlo Method[C]Rarefied Gas Dynamics,2009:311-316. |
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