角柱列を利用した衝突噴流系の伝熱促進に関する研究

概要

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The impinging jet is a widely used technique for realizing high heat transfer rates between a fluid and a surface. However, the area of high heat transfer rate is limited to near the stagnation point. In this study, the augmentation of heat transfer remote from the stagnation point in the impinging plane jet system by a rod array located near the wall was experimentally investigated. Each square rod in the array was positioned normal to the flow direction and parallel to the flat plate surface. The distance between the nozzle and the flat plate H, and spacing between the rods and the flat plate surface C were changed to find the optimum values. The largest heat transfer augmentation was obtained for C=1mm, H/B=10, where the nozzle width of jet is B. In this case, the heat transfer coefficient averaged in the area of 2B from the stagnation point is about 1.6 times greater compared to that without a rod array.
社団法人日本機械学会の論文
1995-09-25