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圆形液体浸没射流冲击驻点传热的数值模拟

Keywords: 射流冲击,传热,数值模拟

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Abstract:

对圆形液体浸没层流射流的流场结构和冲击驻点的单相传热进行了数值模拟.考虑的因素为喷嘴直径、喷嘴至冲击板距离、射流速度和加热面尺寸等.计算结果表明:冲击板上涡的位置随Re的增加而远离对称轴.对于充分发展的管形喷嘴而言,驻点换热随射流出口Re的增加和喷嘴直径的减小而增强;在5<Z/d<9内出现峰值,与加热面尺寸无关.

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