Thermal Management Investigation of Microchannel Incompletely Filled With Ribs in 3D-IC
A novel configuration of microchannel incompletely filled with ribs is proposed in this pa-per.Numerical simulation investigation are conducted and the results indicate that for Re=800～1200,the overall performance of the microchannel incompletely filled with aligned ribs is the best of all the configurations investigated when evaluated with PEC(Performance Evaluation Criteria),while the overall performance of the microchannel completely filled with staggered ribs is the best when evaluated with field synergy number Fc.The irreversibility is lowest for the microchannel completely filled with staggered ribs.This deviation is due to the different weights of flow and heat transfer performance for these two criteria.Moreover,the effect of rib height on flow and heat transfer characteristics in the microchannel incompletely filled with aligned ribs is analyzed.When evalu-ated with PEC,the optimal rib height is 0.325 mm for Re=400～600,and the optimal rib height is 0.225 mm for Re=800～1200.When evaluated with Fc,the optimal rib height is 0.45 mm for all the Re investigated.
thermal managementmicrochannelheat fluxsurface heat transfer coefficientrib
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