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曾憲中19

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Author：

鄭澤明、吳振源、曾憲中、許冠維

Paper name：

多孔介質蛇型通道之流場特性實驗研究

Experimental Study of Fluid Flow characteristics the Serpentine Porous Channel.

Name of activity：

2014航空科技與飛航安全學術研討會

2014 Aviation Technology and Aviation Safety Seminar

Keywords：流場觀測、蛇型通道、發泡鋁材塊

Flow visualization, serpentine channel, aluminum-foam blocks.

Abstract：本研究以實驗方法探討氣流通過多孔介質蛇型通道之流動特性，以空氣為工作流體，在槽道截面寬度比為1之180度圓形轉彎通道內裝置多個發泡鋁材塊(孔隙率為0.90；孔密度10 PPI)，共計有2種通道構型進行煙流場觀測實驗，實驗果指出，氣流流動特性強烈受到發泡鋁材塊排列方式的影響，研究結果可用來解釋相關德傳特徵，並做為相關冷卻設計的參考依據。

This work experimentally investigated the fluid flow characteristics in a serpentine porous channel. The air was used as coolant. Several aluminum-foam blocks (0.90 porosity and 10 PPI pore density) were installed discretely in the 180-deg round turned channel with the square cross section. Total two kinds of test section were employed to perform the flow visualizations. The results indicate that the arrangement of aluminum-foam blocks impacts on the flow pattern remarkably. The present results can be used to explain the heat transfer characteristics of such aluminum-foam channel, and be the referred base of the relevant cooling designs.

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