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基于Brinkman-Darcy模型和两方程模型,对流体在金属泡沫平板通道内的强制对流传热进行了自编程数值模拟,采用体积平均法对流体在金属泡沫内的流动和传热进行宏观处理。模拟结果表明:流体主流速度随孔密度增大而减小,随孔隙率增大而增大;流体相和固体相之间的局部对流传热系数随孔隙率和孔密度增加而增加,金属泡沫对流传热性能随孔隙率增大而减小,随孔密度增大而增大。金属泡沫强化传热的效果十分明显,可以应用于需要强化传热的紧凑式换热器和散热器。
Based on Brinkman-Darcy model and two-equation model, forced convective heat transfer in a metal foam plate channel was simulated by self-programming. The flow and heat transfer in the metal foam were macroscopically processed by the volume average method. The simulation results show that the main flow velocity of the fluid decreases with the increase of the pore density and increases with the increase of the porosity. The local convective heat transfer coefficient between the fluid and solid phases increases with the increase of porosity and pore density. Convective heat transfer decreases with increasing porosity and increases with increasing pore density. Metallic foam heat transfer enhancement effect is very obvious, can be applied to the need for enhanced heat transfer of compact heat exchangers and radiators.