Information Preservation Modeling of Rayleigh-Benard Transition from Thermal Conduction to Convection
文献类型：会议论文
| 作者 | Zhang J(张俊) ; Fan J(樊菁); Zhang J
|
| 出版日期 | 2009 |
| 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 |
| 关键词 | Hydrodynamic Instability Rayleigh-Benard Flows Dsmc Ip Method Rarefied-Gas Flows Monte-Carlo Method Statistical Simulation Attractors |
| 页码 | 359-364 |
| 通讯作者 | Zhang J |
| 中文摘要 | Onset and evolution of the Rayleigh-Benard (R-B) convection are investigated using the Information Preservation (IP) method. The information velocity and temperature are updated using the Octant Flux Splitting (OFS) model developed by Masters & Ye based on the Maxwell transport equation suggested by Sun & Boyd. Statistical noise inherent in particle approaches such as the direct simulation Monte Carlo (DSMC) method is effectively reduced by the IP method, and therefore the evolutions from an initial quiescent fluid to a final steady state are shown clearly. An interesting phenomenon is observed: when the Rayleigh number (Ra) exceeds its critical value, there exists an obvious incubation stage. During the incubation stage, the vortex structure clearly appears and evolves, whereas the Nusselt number (Nu) of the lower plate is close to unity. After the incubation stage, the vortex velocity and Nu rapidly increase, and the flow field quickly reaches a steady, convective state. A relation of Nu to Ra given by IP agrees with those given by DSMC, the classical theory and experimental data. |
| 收录类别 | CPCI-S |
| 会议录 | Rarefied Gas Dynamics
 |
| 会议录出版者 | Melville |
| 会议录出版地 | Amer Inst Physics |
| 语种 | 英语 |
| ISSN号 | 0094-243X |
| ISBN号 | 978-0-7354-0615-5 |
| WOS记录号 | WOS:000265564800058 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/25358]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 通讯作者 | Zhang J |
| 推荐引用方式 GB/T 7714 | Zhang J,Fan J,Zhang J. Information Preservation Modeling of Rayleigh-Benard Transition from Thermal Conduction to Convection[C]. 见:26th International Symposium on Rarefied Gas Dynmaics (RGD26). Kyoto, JAPAN. JUN 20-JUL 25, 2008. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。