基于格子波尔兹曼方法的回热器数值模拟
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摘要
利用格子玻尔兹曼方法,直接对蚀刻薄片和层叠丝网回热器的微观结构流场进行了模拟。得到了两种回热器填料的微观流场和两端的压差。模拟结果显示,当回热器的直径、水力直径和填充率相近情况下,不同流速下蚀刻薄片卷裹式回热器的稳态阻力系数均比层叠丝网回热器小。稳态阻力系数的模拟变化趋势与实验一致。
Based on Lattice Boltzmann Method(LBM),the flow field in the microstructure of mesh screen and etched foil regenerators were simulated.The velocity and pressure drop were obtained by LBM.The simulation results show that velocity field in etched foil regenerator is better distributed than that of mesh screen.And the etched foil regenerator has less resistance coefficient than that of mesh screen regenerator.The simulation results basically agree with the experiments.
Based on Lattice Boltzmann Method(LBM),the flow field in the microstructure of mesh screen and etched foil regenerators were simulated.The velocity and pressure drop were obtained by LBM.The simulation results show that velocity field in etched foil regenerator is better distributed than that of mesh screen.And the etched foil regenerator has less resistance coefficient than that of mesh screen regenerator.The simulation results basically agree with the experiments.
引文
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8王强.新型蚀刻金属薄片式回热器的流动特性研究[D].上海:上海理工大学,2012.
9马诗旻.低温制冷机回热器的数值模拟[D].上海:上海理工大学,2012.
10 Silva G,Semiao V.First-and second-order forcing expansions in alattice Boltzmann method reproducing isothermal hydrodynamics in ar-tificial compressibility form[J].Journal of Fluid Mechanics,2012,698:282-303.
11 Wolff K,Marenduzzo D,Cates M E.Cytoplasmic streaming in plantcells:the role of wall slip[J].Journal of the Royal Society Interface,2012,9(71):1398-1408.
12 Wu F,Shi W,Liu F.A lattice Boltzmann model for the Fokker-Planck equation[J].Communications in Nonlinear Science and Nu-merical Simulation,2012,17(7):2776-2790.
2章忠敏.回热器效率的差分计算[J].制冷学报,1982(3):18-28.
3 Atrey M D,Bapat S L,Narayankhedkar K G.Theoretical analysisand performance investigation of Stirling cycle regenerators[J].Cryo-genics,1991,31(12):1044-1052.
4 He Xiaoyi,Luo Lishi.A priori derivation of the lattice Boltzmann e-quation[J].Physical Review E,1997,55(6):R6333-6336.
5 Latt J.Hydrodynamic limit of lattice Boltzmann equations[D].Genève;Univ.Genève,2007.
6何雅玲,王勇,李庆.格子Boltzmann方法的理论及应用[M].北京:科学出版社,2009.
7郭永飞.低温制冷机用径轴向混合填充式回热器的流动与回热特性研究[D].上海:上海理工大学,2011.
8王强.新型蚀刻金属薄片式回热器的流动特性研究[D].上海:上海理工大学,2012.
9马诗旻.低温制冷机回热器的数值模拟[D].上海:上海理工大学,2012.
10 Silva G,Semiao V.First-and second-order forcing expansions in alattice Boltzmann method reproducing isothermal hydrodynamics in ar-tificial compressibility form[J].Journal of Fluid Mechanics,2012,698:282-303.
11 Wolff K,Marenduzzo D,Cates M E.Cytoplasmic streaming in plantcells:the role of wall slip[J].Journal of the Royal Society Interface,2012,9(71):1398-1408.
12 Wu F,Shi W,Liu F.A lattice Boltzmann model for the Fokker-Planck equation[J].Communications in Nonlinear Science and Nu-merical Simulation,2012,17(7):2776-2790.