後向きステップを有するチャネル乱流の受動的制御 : 伝熱特性と圧力損失特性 : 熱工学,内燃機関,動力など

概要

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Experiments have been performed for a turbulent channel flow over a backward-facing step. The backward-facing step flow is passively controlled by equipping the slit in upstream of the step, and deducing the high-speed fluid from the slit in the recirculating region. Angle of the slit is changed 30°and 45°, and the width of the slit are changed in several steps in ranging 2 mm〜12 mm. The local heat transfer coefficient and the wall static pressure are measured behind the backward-facing step. The total performance between heat transfer and pressure drop is estimated under the conditions of equal pumping power. In addition, the velocity profiles are measured by the split hot film probe. When angle of the slit is 30°and width of the slit is 10 mm, the highest performance is obtained.
一般社団法人日本機械学会の論文
2001-07-25