Analytical Invistigation of Fin Heat Sinks by Natural Convection in a Closed Enclosure

Donga. Vasu, V. Satyanarayana


A heat sink is designed to increase the surface area in contact with the cooling medium surrounding it, such as the air. Approach air velocity, choice of material, fin (or other Protrusion) design and surface treatment are some of the factors which affect the thermal performance of a heat sink.  

In this thesis CFD analysis is conducted on the rectangular fin arrays by laminar and turbulentflow conditions. Different sizesare considered for fins. Parameters varied in this work are height of the fins. Rectangular pin fin and hexagonal pin fins are compared for better heat transfer rate.

3D modeling software Catiais used for 3D models of fin arrays. CFD analysis is done in Ansys

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