淡江大學機構典藏:Item 987654321/62390
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    題名: Numerical Analysis of heat transfer for Steady Three-Dimensional Compressible Flow in Long Microchannels
    作者: 陳慶祥
    貢獻者: 淡江大學航空太空工程學系暨研究所
    日期: 2005-06-01
    上傳時間: 2011-10-18 20:43:59 (UTC+8)
    出版者: Gordon and Breach Science Publishers
    摘要: Heat transfer characteristics for compressible flow in microchannels have been infrequently studied both experimentally and numerically. Experimentally, this was due to the difficulties in fabricating micro temperature sensors. Numerically, this was due to the long computational time and large memory required in simulating the full Navier—Stokes equations three dimensionally.This study develops an efficient three-dimensional numerical procedure to investigate heat transfer characteristics of steady compressible laminar flow in long microchannels.The proposed numerical procedure solves the reduced compressible Navier—Stokes equations.
    Two boundary conditions, a constant wall heat flux and an isothermal wall, were simulated in this study. The local Nusselt number in microchannel flows subject to a constant wall heat flux diminishes considerably along the channel axis.The effect of heat flux on the friction characteristic of microchannel flows was also examined. The effect of pressure ratio on the local Nusselt number was investigated. The local Nusselt number in microchannel flows subject to an isothermal wall was found to behave quite differently compared with that of conventional channel flows. The reasons for the differences were explored and discussed.
    關聯: Journal of Enhanced Heat Transfer 12(2), pp.171-188
    DOI: 10.1615/JEnhHeatTransf.v12.i2.30
    顯示於類別:[航空太空工程學系暨研究所] 期刊論文

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