| 圆形浸没冲击射流速度与压力梯度的数值计算 |
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| 引用本文： | 周定伟,马重芳,苑中显.圆形浸没冲击射流速度与压力梯度的数值计算[J].北京工业大学学报,2000,26(1):63-67. |
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| 作者姓名： | 周定伟 马重芳 苑中显 |
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| 作者单位： | 1. 西安交通大学能动学院,西安,710049
2. 北京工业大学环境与能源工程学院,北京,100022 |
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| 摘 要： | 通过数值计算，系统地研究了圆形浸没液体冲击射流下速度与压力梯度沿轴向和径向的分布情况．考虑的因素包括射流工质、喷嘴直径、喷嘴至冲击面的距离和射流出口Ｒｅ数．计算结果表明，压力梯度的径向分布决定了局部换热系数径向分布形状，计算值与实验结果吻合良好．
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| 关 键 词： | 冲击射流 数值计算 压力梯度 |
Numerical Calculation of the Gradient of Velocity/Pressure Under Impinging Submerged Circular Jets |
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| Zhou Dingwei,Ma Chongfang,Yuan Zhongxian.Numerical Calculation of the Gradient of Velocity/Pressure Under Impinging Submerged Circular Jets[J].Journal of Beijing Polytechnic University,2000,26(1):63-67. |
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| Authors: | Zhou Dingwei Ma Chongfang Yuan Zhongxian |
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| Abstract: | A numerical calculation was conducted to determine the axial and radial gradient of velocity/ pressure with impinging submerged circular Jets perpendicularly. The effects of the factors were investigated, which include working fluid. nozzle-to-plate spacing. nozzle diameter and Reynolds number. The numerical results show that the radial distribution of local heat transfer coefficients are controlled by that of pressure gradient,and that the results are in good accordance with the experimental results. |
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| Keywords: | jet impingement numerical calculation pressure gradient |
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