Numerical Study on Heat Transfer Enhancement of Microchannel With Airfoil Ribs
With the improvement of the integration and power density of electronic devices,the high power consumption and high integration of electronic chips will make the heat dissipation of electronic devices continue to increase.Therefore,heat dissipation has become one of the main bottlenecks in the performance development of high-performance electronic devices.In this paper,a microchannel heat sink with airfoil ribs is proposed,and the airfoil ribs can enhance heat transfer by locally accelerating of fluid flow and mixing of fluid flow.ANSYS FLUENT was used to analyze the influence of the main geometric parameters of airfoil rib such as attack angle,exit angle,length and number on the flow and heat transfer characteristics of microchannel.It is found that the influence of rib length and rib number on the flow resistance and heat transfer performance of the microchannel is more significant than that of the attack angle and the exit angle.Compared with smooth microchannel,the proposed microchannel with airfoil ribs shows better comprehensive heat transfer enhancement performance under the constrain of same pressure drop.
thermal management of electronic devicesheat transfer enhancementmicrochannelsairfoil ribsoptimization
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