Thermohydraulic analysis of MPCM slurry jet impinging on the metal foam
The enhanced heat transfer of the bottom heating surface covered by porous metal foam under the impact of micro-encapsulated phase change material(MPCM)slurry jet impingement was studied.Through numerical simulation,the Forchhei-mer-Brinkman-Darcy relationship and local heat balance equation were used to describe the flow of coolant in metal foam.The characteristics of heat transfer enhancement of metal foam and MPCM slurry were confirmed by comparing the model with the ex-periment.The effects of nozzle size,porosity and height of metal foam,and mass fraction of MPCM slurry were discussed.The results show that the lower wall temperature can be obtained by using the coupling effect of MPCM slurry and metal foam in jet impingement.The cooling effect of the heat sink is the best with the inlet velocity vin=1 m/s,porosity ε=0.85,mass fraction of coolant cm=5％.
MPCMSlurryMetal foamJet impingementHeat transfer enhancement
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