Performance analysis of microchannel heat sink with flow disrupting pins

Study of thermo-hydraulic characteristics a novel microchannel heat sink having flow disrupting pins is numerically and experimentally carried out in this paper. Cylindrical are inserted from top cover into the rectangular instead conventional technique pin-fins originating base microchannel. Initially, effect pin diameter on performance studied optimum established, later enhanced (PE-MCHS) compared with (MCHS). Of five diameters studied, 0.2mm (relative γ=0.4) gives best performance. Both MCHS PE-MCHS subjected to flux ranging 65W/cm2 200 W/cm2 cooled by water flowing at Reynolds number 745 1500. The presence disturbs velocity distribution completely increases transfer capacity accompanied higher pressure drop penalty. average enhancement factor obtained 1.24. Correlations showing channel width ratio (Wc/ Dp) Nusselt (Nu)and friction (f) proposed.