J056051 T形合流管における高・低温空気流の乱流混合促進・制御([J05605]乱流における運動量,熱,物質の輸送現象(5))

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An experimental study was made on the promotion and control of turbulent mixing of hot and cold airflows in a T-junction that simulated an HVAC unit for automobile A/C system. The present study used the delta wings to promote and control of turbulent mixing two flows. The delta wings were attached on the branch wall, and their optimum specification was determined based on the mixedness. The location of measurement was changed from X/B = 2 to X/B = 1 following the downsizing of an HVAC unit. The thermal mixing was promoted most effectively with a delta wing row of N = 7, d/w = 0 and h/B = 0.5, and the degree of the mixing could be controlled by changing the angle of attack (a=90°〜150°) of the wings. The dynamic range of the mixedness with the present wings was wider than that obtained at the location of X/B = 2. Flow field of each angle of attack was examined by the visualization of the mixing interface between the main and branch flows.
一般社団法人日本機械学会の論文
2011-09-11