EXPERIMENTAL ANALYSIS OF JET IMPINGEMENT ON ALUMINIUM HEAT SINK

Heat sinks in electronic systems are devices that transfer heat from the hotter body by dissipating heat to fluid medium, generally air. These are basically heat exchangers that are used to transfer heat from the components to the surroundings so as to keep away from the problem of overheating. So number possible ways are implemented in all fields. This study presents, heat transfer rate at different heat input conditions for a aluminium flat fin as a heat sink. The maximum heat dissipation rate for the different Z/d ratio's and velocity was optimized by using taguchi's method by taking orthogonal array design as L16 at different heat input conditions. The analysis part was done by using ansys fluent CFD programme. The studies of experimental and numerical were carried out for a aluminium heat sink with same nozzle diameter, two different velocity rates at four different input conditions. The variations of heat transfer rate to z/d ratio's and for Re-Nu analysed and compared. Finally the maximum heat transfer rate was observed at optimum parameter's. Hence plots are drawn using experimental as well as numerical results. It was observed that both numerical and experimental results were taken as a good agreement.