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| 多孔介质内交变流动与换热的格子Boltzmann研究 | |
| 引用本文： | 常心洁,戴群特,杨鲁伟. 多孔介质内交变流动与换热的格子Boltzmann研究[J]. 工程热物理学报, 2011, 0(9): 1445-1448 |
| 作者姓名： | 常心洁 戴群特 杨鲁伟 |
| 作者单位： | 中国科学院理化技术研究所;中海石油气电集团技术研发中心;中国科学院研究生院; |
| 基金项目： | 国家自然科学基金资助项目(No.50890181;No.51076160) |
| 摘 要： | 针对制约脉冲管制冷机效率提高的蓄冷器内交变流动与换热问题，本文使用格子Boltzmann方法计算并分析了多孔介质内交变流动与换热特性。结果表明，交变流动压力波振幅对速度与压力和温度间的相位差的影响很小；通道界面处速度与压力的相位差在某一孔隙率下有一极小值；多孔介质内最大阻力系数与雷诺数的关系可以为设计蓄冷器时填料结构的... |
| 关 键 词： | 多孔介质 格子Boltzmann方法 交变流动 |
Simulation of Oscillating Flow and Heat Transfer in Porous Medium by Lattice Boltzmann Method |
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| CHANG Xin-Jie DAI Qun-Te YANG Lu-Wei. Simulation of Oscillating Flow and Heat Transfer in Porous Medium by Lattice Boltzmann Method[J]. Journal of Engineering Thermophysics, 2011, 0(9): 1445-1448 | |
| Authors: | CHANG Xin-Jie DAI Qun-Te YANG Lu-Wei |
| Affiliation: | CHANG Xin-Jie~(1,3) DAI Qun-Te~(1,2) YANG Lu-Wei~1 (1.Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China,2.Graduate University of the Chinese Academy of Sciences,3.China National Offshore Oil Corporation Gas & Power Group R&D Center,Beijing 100027,China) |
| Abstract: | The lattice Boltzmann method is applied to investigate the oscillating flow and heat transfer in the regenerator,which is the limit of the efficiency enhancement for pulse tube cryocooler. The numerical simulation is presented for the characteristics of the oscillatory motion and heat transfer in the porous medium.The results indicate that the amplitude of the oscillating pressure wave has little influences for the phase differences among velocity,pressure and temperature.In the channel profile,there is a m... |
| Keywords: | porous medium lattice Boltzmann method oscillating flow |
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