NUMERICAL INVESTIGATION OF COOLING BEHAVIOR IN MINICHANNEL HEAT SINK OF MULTIPLE CONFIGURATIONS

Abstract

In this numerical investigation, three-dimensional Minichannel Heat Sink (MCHS) models with straight, triangular, chevron, and wavy channels having 1, 3, and 5 undulations, under 100,000 W/m2 input heat flux were investigated. Reynolds number and coolant inlet temperatures were varied from 50 to 300 and 10°C to 25°C, respectively. The effect of these parameters on pressure drop, base surface temperature, heat-transfer coefficient, etc., were investigated. Chevron geometry showed the highest cooling capability in terms of heat-transfer coefficient and base plate temperature. This configuration also exhibited the highest pressure drop and pumping power. Lowering of coolant inlet temperature from 25°C to 10°C resulted in base surface temperature drop in the range of approximately 17°C-30°C depending on Reynolds number.