CFD ANALYSIS OF INCLINED JET IMPINGEMENT HEAT TRANSFER IN MICROCHANNEL

Abstract

In this study inclined micro jet impingement heat sink used for electronic cooling application. Several particles and staggered inline micro-jet configuration will be used for study. In the present study fluid flow, there are two cases. In first case, pressure drop and heat transfer characteristics of rectangular micro- jet impingement heat sink have been analysed and validation is done by comparing experimental results with numerical results using computational fluid dynamics. In the second case the effectiveness of inclined jet impingement heat sink will be analyzed at various no. of jets for the maximum temperaturedrop of fluid-solid interface. The shape optimization of a micro-jet heat sink with a grooved structure has been performed using a multi objective evolutionary algorithm in ANSYS CFX solver. In the present study inclined micro jet impingement focus on electronic cooling in micro level. This study of heat sink focus on 3D micro channel for fluid flow analysis. The jets used have been placed at an inclination of 450 from the top surface of the impingement heat sink. during this process copper has been used as the solid material and water has been used as a cooling fluid. The optimum results were obtained by using the 13 micro-jets heat sink at an inclination of 450. The study simulated in different micro-jets heat sink with 4, 5, 9, 13 and 16 no. of impingement jets at water as a fluid. During study simulation carried out on these no. of jets with 3 different diameters ie 0.1mm, 0.15mm & 0.2mm. After the simulation 13 jet impingement micro-jets heat sink shows maximum temperature drop between fluid & solid interface. During the simulation difference in temperature and heat transfer coefficient define maximum heat transfer through the impingement heat sink. The geometry of the micro-jet impingement heat sink is constructed in solid work design software and the simulation is done on ANSYS CFX.