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首页> 外文期刊>International Journal of Heat and Mass Transfer >Forced convective heat transfer with impinging rectangular jets
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Forced convective heat transfer with impinging rectangular jets

机译：撞击矩形喷嘴的强制对流换热

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摘要

The fluid flow and heat transfer characteristics of a rectangular air jet impinging on a heated flat plate have been investigated experimentally. The effects of jet Reynolds number and nozzle-to-plate spacing on local and average Nusselt number were studied. Results show that both have a significant influence on heat transfer behaviors of impinging jets. Local and average heat transfer data along the axial and lateral directions were correlated and compared with the previous data. The local Nu number and the free-stream turbulence intensity of impinging jets exhibit a relationship: Nu/Re~(1/2) = 0.014 Tu Re~(1/2) + 0.517. The corresponding average Nu number and turbulence intensity have a relationship: M/Re~(1/2) = 0.014Tu Re~(1/2) + 0.472. Heat transfer mechanics was analyzed in terms of the turbulence intensity.
机译：实验研究了矩形空气射流撞击在加热的平板上的流体流动和传热特性。研究了射流雷诺数和喷嘴到板间距对局部和平均努塞尔数的影响。结果表明，两者都对冲击射流的传热行为有重大影响。将沿轴向和横向的局部和平均传热数据进行关联，并与以前的数据进行比较。局部Nu数与撞击射流的湍流强度呈关系：Nu / Re〜（1/2）= 0.014 Tu Re〜（1/2）+ 0.517。相应的平均Nu数与湍流强度具有关系：M / Re〜（1/2）= 0.014Tu Re〜（1/2）+ 0.472。根据湍流强度分析了传热力学。

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