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  • numerical simulation of heat transfer enhancement in wavy microchannel heat sink

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1397/06/10
    • تاریخ انتشار در تی پی بین: 1397/06/10
    • تعداد بازدید: 357
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -

    in this paper, heat transfer and water flow characteristics in wavy microchannel heat sink (wmchs) with rectangular cross-section with various wavy amplitudes ranged from 125 to 500 μm is numerically investigated. this investigation covers reynolds number in the range of 100 to 1000. the three-dimensional steady, laminar flow and heat transfer governing equations are solved using the finite-volume method (fvm). the water flow field and heat transfer phenomena inside the heated wavy microchannels is simulated and the results are compared with the straight microchannels. the effect of using a wavy flow channel on the mchs thermal performance, the pressure drop, the friction factor, and wall shear stress is reported in this article. it is found that the heat transfer performance of the wavy microchannels is much better than the straight microchannels with the same cross-section. the pressure drop penalty of the wavy microchannels is much smaller than the heat transfer enhancement achievement. both friction factor and wall shear stress are increased proportionally as the amplitude of wavy microchannels increased.

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