The application of microchannel heat sinks with triangle ribs for thermal management

Abstract: A microchannel heat sink with a smooth and triangle-ribs embedded surface is examined using a simulation-based study. The heat sink is composed of microchannels, each of which is 1 cm long and 150 μm wide. The heat sink is studied using water. A range of Reynolds numbers, from 100 to 500, are used in the study. The thermal performance is computed using the fluids' surface temperatures as well as their inlet and exit temperatures. The analysis found that a greater Reynolds number increases the Nusselt number and the heat transfer coefficient. It has also been observed that the friction factor decreases as the Reynolds number increases. The heat transmission rate of the triangle-ribs microchannel was clearly higher than that of the smooth one. The total friction factor of the heat sink with triangle-rib microchannels is also found to be higher than that of the heat sink with smooth channels. Furthermore, it is noticed in the obtained results that as the Reynolds number rises, the pressure drop rises.

Keywords: Simulation, Computational Fluid Dynamics, Heat Transfer, Microchannels

DOI: 10.54941/ahfe1007031

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