STEADY STATE THERMAL ANALYSIS ON HEAT SINKS HAVING DIFFERENT TYPES OF RECTANGULAR FINS USING CFD

MECHANICAL ENGINEERING

This paper introduces the way of heat extraction from heated sink by using different shapes of fins under natural convection. Finned heats sinks are used to cool power electronic Components. The shape which is used is of Hollow Rectangular Fins with Different perforations such as rectangular, square, circular and elliptical. The heat sink i.e. base is of dimension (l×b×h) 70×60×10 mm and height of the fin is 70 mm. As per industrial demand there are numerous of research are going on to enhance the thermal t ransmission from the surface of the he at sink through fins and this is done by increasing the contact surface area. The Perforations on the hollow fins are done to achieve the maximum contact surface area. This results in improved rate of heat dissipation from the surface of the fin. All the fins are designed using CATIA V5 and the thermal properties are analyzed by using ANSYS R13 Workbench. The main aim of this research is to observe variation of thermal properties such as temperature distribution, total heat flux and direction heat flux over the different shapes of fins having different perforations. Here aluminum is selected as fin material as it is lighter in weight as well as good thermal conductor.In this study, a literature review was first conducted in order to better understand the subject and shed light on the continuation of the study.Heat sink used with solid type of fins but construction of fins in different holes and taper size, it will increase the heat transfer area. So in present thesis different fins with different holes and taper in nature are introduced with fillet and analysis is done for the same.

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