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標題: 多孔平行板中衝擊噴氣流孔距比對熱傳性能之影響
Effect of Jet-Jet Spacing on Heat Transfer for Confined
作者: 陳文義
Chen, Wen-i
關鍵字: 孔距比
出版社: 機械工程學系
本篇論文研究平行板(confined flow field)中,多孔垂直噴氣流衝擊於
局部紐塞數(local Nusselt number, Nu)造成之影響。孔道排列採交錯
式(staggered array),孔數為5,孔徑則固定為3 mm;孔距比分別為4、6
二種;噴氣流之全溫度(total temperature, )控制在27℃;衝擊面板上
變化(w)分別為37.5mm、62.5mm、87.5mm、112.5mm (w/d分別為12.50,
29.17, 37.50);加熱片之熱通量則固定在1000 。對於噴氣流雷諾數之控
制方面,中心噴氣孔之雷諾數( )固定於30,000,而鄰孔之雷諾數(

The heat transfer of five confined staggered array circular air
jets impinging on a flat plat with a constant surface heat flux
is investigated. The work mainly deals with the effect of jet-
jetspacing on the local Nusselt number. The considered spacing-
to-diameter ratio individually is 4, 6, 8, 12, 16 and 24. The
jet total temperature is controlled at 27℃. The plate spacing-
to-diameter ratio is selected to be 2.0 and 4.0 respectively.
The jet diameter is 3 mm. The surface heat flux is 1,000 . The
consideredReynolds number of center jet is 30,000. The Reynolds
number of adjacent jets individually is 30,000, 20,000 and 0.
Three heating foil widths are arranged in experiment, namely,
37.5, 87.5 and 112.5 mm (w/d=12.50, 29.17, 37.50 respectively).
Appears in Collections:機械工程學系所

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