Optimal height ratio of Y-shape pin fin to plate fin of PPFHS

Abstract

The purpose of this study is to determine the optimal ratio of Y-shape pin fin height to plate fin height in order to maximize the cooling performance of the plate pin fin heat sinks. The three-dimensional model of plate pin fin heat sink is considered in this study. Computational fluid dynamic method is used as a tool for solving the model. In this study, four values of height ratio, 0.2, 0.4, 0.6 and 0.8, and five values of air velocity, 0.5, 1.0, 1.5, 2.0 and 2.5 m/s, are analysed. The results of the study showed that the optimal fin height ratio is 0.6 resulting in the lowest thermal resistance of the plate pin fin heat sink.