| 低温回热制冷机内交变流动与换热的格子-Boltzmann方法模拟 |
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| 引用本文： | 戴群特,杨鲁伟,常心洁.低温回热制冷机内交变流动与换热的格子-Boltzmann方法模拟[J].低温工程,2011(2):8-12,43. |
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| 作者姓名： | 戴群特 杨鲁伟 常心洁 |
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| 作者单位： | 中国科学院理化技术研究所;中国科学院研究生院; |
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| 基金项目： | 国家自然科学基金(No.50890181、No.51076160) |
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| 摘 要： | 采用格子-Boltzmann方法(LBM)分别通过对二维通道及多孔介质内交变流动与换热进行了数值模拟,以研究低温回热制冷机中脉冲管内及回热器内交变流动与换热规律.结果表明:二维通道交变流动结果与解析解吻合得很好.当交变流动数较大时,出现速度环形效应,温度表现为周期波动变化.多孔介质内各点速度总体均呈现交替波动变化,但振...
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| 关 键 词： | 多孔介质 格子Boltzmann方法 交变流动 回热器 |
Simulation of oscillating flow and heat transfer in regenerative cryocoolers by lattice Boltzmann method |
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| Dai Qunte,Yang Luwei,Chang Xinjie.Simulation of oscillating flow and heat transfer in regenerative cryocoolers by lattice Boltzmann method[J].Cryogenics,2011(2):8-12,43. |
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| Authors: | Dai Qunte Yang Luwei Chang Xinjie |
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| Affiliation: | Dai Qunte1,2 Yang Luwei1 Chang Xinjie1,2(1Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China)(2Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | A numerical study was performed for oscillating flow and heat transfer in two dimensional channel and porous media by lattice Boltzmann method(LBM).This was used to study the oscillating flow and heat transfer in the pulse tube and regenerator of regenerative cryocoolers.The results indicate that the results in two dimensional channel agree well with the analytical solution.When the Womersley number is relatively big,the velocity distribution shows the Richardson annular effect and the temperature fluctuate... |
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| Keywords: | porous media lattice Boltzmann method oscillating flow refrigerator |
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