Study on topology optimization and temperature characteristics of microchannel heat sinks
A variable-density topology optimization method was employed to design the structure of microchannels with three different heat source configurations,aiming to obtain optimal flow channel morphology parameters By harnessing the evapo-rative effects of flow boiling heat transfer and effectively mitigates high-temperature hotspots.At a heat flux of Q=90 W/cm2,the results indicate that the peak temperatures of the microchannel heat sinks for the three configurations are reduced by 21.64％,19％,and 18.2％,respectively.Simulations of boiling heat transfer show that,compared to parallel microchannels,the convective heat transfer coefficients in the optimized topology microchannels increase by 25.83％,26.72％,and 24.60％,respectively,while the total thermal resistance decreases by 21.51％,24.93％,and21.47％,respectively.The comprehensive performance evaluation coefficient PEC achieves a maximum value of 1.87.
NETL
NSTL
万方数据
