COMPARISON OF HEAT TRANSFER & FLUID FLOW IN THE MICRO-CHANNEL WITH RECTANGULAR AND HEXAGONAL CROSS SECTION

Abstract

<p>Due to the shrinking of the industrial equipment, the heat transfer and cooling of these devices are of particular importance. Therefore, this paper studies fluid flow and heat transfer in a micro-channel. In this study three-dimensional laminar numerical simulations, based on the Navier–Stokes equations and energy equation, are obtained for pressure drop and heat transfer in these micro-channel heat sinks under the same conditions. In this article, the first step is to investigate the effect of channel shape and geometry on the heat transfer and pressure drop in micro-channels. In, the second step, the effect of undefined heat flux and distinct input condition is investigated, and third step, the effect of increasing the number of channels is checked to do an ideal form of heat transfer in a micro-channel. According to the results, heat transfer using a hexagonal micro-channel is improved 20% on the rectangular microchannel (with equal hydraulic diameter).</p>