本文建立了构形树状小通道内流动沸腾换热模型,数值研究了树状通道网络内的流动沸腾换热特性,并与具有相同换热面积、入口直径的蛇形通道就泵功消耗、流动沸腾压降、通道温度变化和热有效性等指标进行了性能对比分析.研究表明,与蛇形通道相比,构形通道具有流动沸腾压降、泵功消耗小的优势,且其温度均匀性、热有效性也均优于蛇形通道.当热流密度为20 W/cm2时,构形树状通道内流体的泵功消耗约为蛇形通道的一半,其热有效性为蛇形通道的1.9倍.
参考文献
[1] | 陈永平,郑平.新型分形树状微通道散热器的实验研究[J].工程热物理学报,2006(05):853-855. |
[2] | Yongping Chen;Ping Cheng .Heat transfer and pressure drop in fractal tree-like microchannel nets[J].International Journal of Heat and Mass Transfer,2002(13):2643-2648. |
[3] | W. Escher;B. Michel;D. Poulikakos .Efficiency of optimized bifurcating tree-like and parallel microchannel networks in the cooling of electronics[J].International Journal of Heat and Mass Transfer,2009(5/6):1421-1430. |
[4] | W. Yu;D. M. France;M. W. Wambsganss;J. R. Hull .Two-phase pressure drop, boiling heat transfer, and critical heat flux to water in a small-diameter horizontal tube[J].International Journal of Multiphase Flow,2002(6):927-941. |
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