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首页> 外文期刊>Journal of Heat Transfer >Slip Flow Convection in Isoflux rectangular Microchannels
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Slip Flow Convection in Isoflux rectangular Microchannels

机译:等流量矩形微通道中的滑流对流

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摘要

Laminar forced convection in thermally developing slip flow through isoflux rectangular microchannels is analytically investigated. Local and fully developed Nusselt numbers, fluid temperatures, and wall temperatures are obtained by solving the continuum energy equation for hydrodynamically fully developed slip flow with the velocity slip and tem- perature jump condition at the walls. It is found that heat transfer may increase, decrease, or remain unchanged, compared to nonslip flow conditions, depending on aspect ratios and two-dimensionless variables that include effects of the microchannel size or rarefac- tion and the fluid/wall interaction. The transition points that separate heat transfer en- hancement from reduction are acquired for different aspect ratios.
机译:分析研究了通过等通矩形微通道热流动的层流中的层流强迫对流。通过求解连续动力方程,求解壁面的速度滑移和温度跃变条件,可以得到局部和完全展开的Nusselt数,流体温度和壁温。已经发现,与防滑流动条件相比,热传递可能会增加,减少或保持不变,这取决于纵横比和二维变量,其中包括微通道尺寸或稀疏性以及流体/壁相互作用的影响。对于不同的纵横比,可以获得将传热增强与还原分开的过渡点。

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