| 格子Boltzmann方法对Rayleigh-Benard流的模拟与非线性分析 |
| |
| 引用本文： | 卞恩杰,杨茉,李凌,张玉文.格子Boltzmann方法对Rayleigh-Benard流的模拟与非线性分析[J].工程热物理学报,2012(4):685-688. |
| |
| 作者姓名： | 卞恩杰 杨茉 李凌 张玉文 |
| |
| 作者单位： | 上海理工大学能源与动力工程学院;密苏里大学机械与航天工程系 |
| |
| 基金项目： | 国家自然科学基金资助项目(No.50876067);上海教委科研创新重点项目(No.10ZZ91);上海市重点学科建设资助项目(No.J50501) |
| |
| 摘 要： | 本文利用格子Boltzmann方法对不同Ra下的Rayleigh-Benard自然对流进行了数值模拟,得到的Nu与前人的结果一致。数值结果表明,Ra=2000时,格子Boltzmann方法得到了三个静态分岔解,其中一个为非稳定解;在Ra=5×10~5时格子Boltzmann方法得到了类似于周期的振荡解。本文采用插值格子Boltzmann方法,在Ra=2000,取不同插值节点进行计算时,得到了一种非稳态解。
|
| 关 键 词： | 格子 Boltzmann方法 Rayleigh-Benard流 非线性 |
Simulation and Nonlinear Analysis for the Rayleigh-Benard Convection With the Lattice Boltzmann Method |
| |
| BIAN En-Jie,YANG Mo,LI Ling,ZHANG Yu-Wen.Simulation and Nonlinear Analysis for the Rayleigh-Benard Convection With the Lattice Boltzmann Method[J].Journal of Engineering Thermophysics,2012(4):685-688. |
| |
| Authors: | BIAN En-Jie YANG Mo LI Ling ZHANG Yu-Wen |
| |
| Institution: | 1.University of Shanghai for Science and Techonology,Energy and Power Engineering,Shanghai 200093,China; 2.University of Missouri,Mechanical and Aerospacing Engineering,Missouri 65211,America) |
| |
| Abstract: | The Rayleigh-Benard convection for different Ra is simulated with the lattice Boitzmann method.The Nu for different Ra is consistent with the results of others.Three static bifurcation solutions are got for Ra=2000 and one of them is instable.A periodic oscillatory solution is got for Ra=5×10~5.An unstable solution is got for Ra=2000 by the interpolation supplemented lattice Boitzmann method when the interpolation nodes are changed. |
| |
| Keywords: | lattice Boltzmann method Rayleigh-Benard convection nolinear |
| 本文献已被 CNKI 等数据库收录！ |
