Comparative study of thermal performance of plain and filleted plate-fin heatsinks under the simultaneous influence of impinging air jet and internal water flow
الموضوعات :Shervin Azadi 1 , Ali Abjadi 2
1 - Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
2 - Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
الکلمات المفتاحية: Heat Sink, Fin, Microchannel, Numerical Solution, Hybrid Mesh,
ملخص المقالة :
In this paper, the thermal performance of two types of heat sinks one with simple plate fins and the other with pin fins including fillet is numerically investigated under the simultaneous influence of a top impinging air jet and the flow of pure water through the internal microchannels of the microchannel heat sink. The objective is to evaluate the effect of fin geometry on the heat transfer rate, pressure drop, Nusselt number, and the outlet temperature of the cooling fluid. In addition, the effect of Reynolds number on the thermal and hydraulic performance of these heatsinks under conditions of simultaneous water flow in internal microchannels and impinging air jets was also investigated. The continuity, momentum, and energy equations for steady, laminar, and incompressible flow are solved, and the numerical analysis is carried out using a composite mesh. The results indicate that pin fins exhibit better thermal performance at high flow rates, whereas plate fins are more suitable at lower flow rates due to their lower pressure drop.
This study can serve as a basis for geometric optimization in the design of hybrid thermal management systems.
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