开孔泡沫在各工业领域中应用广泛，但由于其几何复杂性，建立准确而普遍的相关性仍然具有挑战性。为了解随机Kelvin cell结构孔隙率和孔泡密度(PPI)如何影响热量传递与动量传递，并最终影响其换热性能，本文采用计算流体力学(CFD)方法对不同孔隙率和PPI，泡沫材料为金属铝的随机Kelvin cell结构强制对流换热(FCHT)过程进行了数值模拟。结果表明：压降及体积对流换热系数随孔隙率的减小而增大，随PPI的增大而增大；换热性能随孔隙率的增大而增大，且存在最大值，随PPI的减小而减小，且具有三种不同的趋势；随机Kelvin cell结构相比与规则结构更加接近真实泡沫，具有更好的替代性。

Open cell foam is widely used in various industries, but because of its geometric complexity, it is still challenging to establish an accurate and universal correlation. To understand how the porosity and pores per inch (PPI) of random Kelvin cell structures affect heat and momentum transfer, and ultimately affect their heat transfer performance,in this paper, computational fluid dynamics (CFD) method is used to simulate the forced convection heat transfer (FCHT) process of random Kelvin cell structure with different porosity and PPI, and the foam material is aluminum. The results show that the pressure drop and volumetric convective heat transfer coefficient increase with the decrease of porosity and the increase of PPI; The heat transfer performance increases with the increase of porosity, and there is a maximum value, which decreases with the decrease of PPI, and has three different trends; Compared with the regular structure, the random Kelvin cell structure is closer to the real foam and has better substitutability.

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