金属海绵阻力特性数值计算

The cell structure of the metal foam was reconstructed using the body-centered cubic structure and Kelvin structure， respectively， and the internal resistances of the metal foam under single-phase flow and two-phase flow at different cutting angles were analyzed and compared. The results showed that: 1) the body-centered cubic structure can achieve a porosity e range of 68.01% < e < 98.01%; while the Kelvin structure can achieve a porosity range of 72.1% < e < 98.7%; 2） the pressure drop calculated by two-phase flow was about 5% higher than that calculated by single-phase flow when the mass fraction of oil droplets was 9.1% and the inlet velocity was less than 20 m/s; 3) the resistance characteristics of the Kelvin structure metal foam with a cutting angle of 30° were in high agreement with those of the actual metal foam，and can better characterize the resistance characteristics of the metal foam.