HEAT TRANSFER CHARACTERISTICS OF AN IMPINGING BUTANE/AIR FLAME JET OF LOW REYNOLDS NUMBER
HEAT TRANSFER CHARACTERISTICS OF AN IMPINGING BUTANE/AIR FLAME JET OF LOW REYNOLDS NUMBER
复制标题
低雷诺数冲击丁烷/空气火焰射流的传热特性
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
C. Leung
中科院分区：
文献类型：
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作者：
Ll Dong;C. Cheung;C. Leung
进行了一项实验研究，以确定低雷诺数的预混合丁烷/空气圆形火焰射流在矩形平板上正常向上撞击的传热特性。研究了火焰射流的出口雷诺数和当量比以及喷嘴和冲击板之间的距离对射流热性能的影响。选择雷诺数范围以涵盖层流到过渡流条件。研究是根据与富燃料、化学计量和贫燃料条件相对应的当量比进行的。喷嘴板距离从 1d 到 8d 不等。在研究的雷诺数范围内，当喷嘴板距离保持在5d时，在当量比φ=0.85时获得最高的努塞尔数。在化学计量条件下，在喷嘴-板距离为6d时获得最高努塞尔数。获得无量纲相关性...
An experimental study was performed to determine the heat transfer characteristics of a premixed butane/air round flame jet, of low Reynolds number, impinging upwards normally on a flat rectangular plate. The effects of the exit Reynolds number and equivalence ratio of the flame jet, and the distance between the nozzle and the impingement plate, on the thermal performance of the jet were examined. The range of Reynolds numbers was selected to cover the laminar to the transitional flow conditions. The investigations were conducted with equivalence ratios corresponding to the fuel-rich, stoichiometric, and fuel-lean conditions. The nozzle-plate distance was varied from 1d to 8d. Within the range of Reynolds numbers investigated, the highest Nusselt numbers were obtained at the equivalence ratio of φ = 0.85 when the nozzle-plate distance was maintained at 5d. At the stoichiometric condition, the highest Nusselt number was obtained at the nozzle- plate distance of 6d. Nondimensional correlations were obtained...