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- W2811336508 abstract "Current technologies for the cooling of high power integrated circuits (IC) chips employ single-phase liquid flow through microchannel heat sinks. The surface temperature in these devices increases along the flow direction, leading to temperature nonuniformities in the cooled device. Mitigation of this temperature nonuniformity, while enhancing the heat exchange along the flow path, has been demonstrated through the use of variable fin density microchannels. This paper demonstrates experimentally and numerically the potential of micro-pin-fin heat sinks as an effective alternative to microchannel heat sinks for dissipating high heat fluxes from small areas. Results from this experimental and numerical investigation demonstrate the ability of variable pin-fin density with offset configurations to reach low thermal resistance coefficients and reduce the surface temperature nonuniformity while presenting low-pressure drops. For the maximum Reynolds number considered in this study (2200), we demonstrate the capacity of the cooling scheme, when submitted to a heat flux of 50 W/cm2, to reach a pumping to chip power ratio of 0.37%, a thermal resistance coefficient of 0.26 cm2 K/W and a temperature uniformity along the 5 cm long cooling device of 2 °C." @default.
- W2811336508 created "2018-07-10" @default.
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- W2811336508 date "2018-10-01" @default.
- W2811336508 modified "2023-10-02" @default.
- W2811336508 title "Experimental and numerical study of micro-pin-fin heat sinks with variable density for increased temperature uniformity" @default.
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- W2811336508 doi "https://doi.org/10.1016/j.ijthermalsci.2018.06.019" @default.
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