CFD & Thermal Analysis of Heat Sink and its Application in CPU

The development of the digital computer and its usage day by day is rapidly increasing. But the reliability of electronic components is getting affected critically by the temperature at which the junction operates. As operating power and speed increases, and as the designers are forced to reduce overall systems dimensions, the problems of extracting heat and controlling temperature becomes crucial. In the last decade or so, CFD simulations have become more and more widely used in the studies of electronic cooling. In this paper the CFD simulation and Thermal analysis is carried out with a commercial package provided by ANSYS-FLUENT. The geometric parameters and design of heat sink for improving the thermal performance is experimented. This paper utilizes CFD to identify a cooling solution for a desktop computer, which uses a 5 W CPU . The design is able to cool the chassis with heat sink attached to the CPU is adequate to cool the whole system . This paper considers the circular cylindrical pin fins and rectangular plate heat sink design with aluminium base plate and the control of CPU heat sink processes. Keywords— Computational Fluid Dynamics (CFD), CPU Cooling, Pin Fins, Heat Sink, Rectangular Plates, Thermal Analysis.