多孔泡沫金属内层流强制对流传热的相界面温差分析

Phase Interface Temperature Difference of Laminar Forced Convection in Porous Metal Foam

基于简单立方体模型,应用Brinkman-Forchheimer-extended Darcy流动模型并结合边界层理论,分析了边界恒热流条件下的多孔泡沫金属通道内层流强制对流时流体与多孔泡沫金属间的相界面温差,结果表明,相界面温差随着流体流速的增大而减小,随着多孔泡沫金属孔密度的增大而减小,而随着多孔泡沫金属孔隙率的增大而增大。

The phase interface temperature difference between porous metal foam with rectangular cross section and fluid is analyzed based on simple cubic model with Brinkman-Forchheimer-extended Darcy flow model and boundary layer theory under constant wall heat flux condition of laminar forced convection. It is shown that the phase interface temperature difference decreases with fluid velocity and pore density increasing, but increases with porosity of porous metal foam increasing.