| 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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| 会议录名称 | Rarefied Gas Dynamics |
| 2009 | |
| 页码 | 311-316 |
| 会议名称 | 26th International Symposium on Rarefied Gas Dynmaics (RGD26) |
| 会议日期 | JUN 20-JUL 25, 2008 |
| 会议地点 | Kyoto, JAPAN |
| 摘要 | 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. |
| 关键词 | Direct Simulation Monte Carlo Method Cell Size Collision Scheme |
| WOS记录号 | WOS:000265564800050 |
| 收录类别 | CPCI-S |
| 语种 | 英语 |
| 引用统计 | |
| 文献类型 | 会议论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/25356 |
| 专题 | 高温气体动力学国家重点实验室 |
| 通讯作者 | Sun QH |
| 推荐引用方式 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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