2023 Volume 26 Issue 1 Pages 151-157
The newly developed lotus-type porous metal having a great number of small directional pores can be manufactured at low cost and its application as a heat sink has drawn a great deal of attention. Since the lotus-type metal consists of small pores extending in one direction only, the heat transmittance is higher and the pressure loss is smaller than that of a general isotropic porous body. In this study, a fast computing scheme for evaluation of the heat transfer characteristics of a heat sink made of a lotus-type porous metal was developed based on the finite element method for heat conduction analysis. The fin surface heat transfer coefficient was identified from the experimental results, and a general prediction equation for Nusselt number was derived. The evaluated heat transfer performance of a lotus-type porous metal heat sink structure was illustrated and agreed well with the experimental results.
