| 圆形液体浸没射流冲击驻点传热的数值模拟 |
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| 引用本文： | 周定伟,马重芳.圆形液体浸没射流冲击驻点传热的数值模拟[J].北京工业大学学报,2001,27(3):316-321. |
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| 作者姓名： | 周定伟 马重芳 |
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| 作者单位： | 北京工业大学环境与能源工程学院 |
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| 摘 要： | 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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| 关 键 词： | 射流冲击 传热 数值模拟 |
| 文章编号： | 0254-0037(2001)03-0316-06 |
| 修稿时间： | 2001年1月5日 |
Numerical Simulation of Stagnation Point Heat Transfer with Impinging Submerged Circular Jets |
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| ZHOU Ding-wet,MA Chong-fang College of Environment and Energy Engineering,Beijing Polytechnic Univeisity,Beijing ,China.Numerical Simulation of Stagnation Point Heat Transfer with Impinging Submerged Circular Jets[J].Journal of Beijing Polytechnic University,2001,27(3):316-321. |
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| Authors: | ZHOU Ding-wet MA Chong-fang College of Environment and Energy Engineering Beijing Polytechnic Univeisity Beijing China |
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| Affiliation: | ZHOU Ding-wet,MA Chong-fang College of Environment and Energy Engineering,Beijing Polytechnic Univeisity,Beijing 100022,China |
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| Abstract: | A numerical simulation was performed to study the laminar flow field structure of the submerged circular jets and single phase convective heat transfer at the impinging stagnation point. The factors considered are jet velocity, nozzle diameter, nozzle-to-(impinging) plate spacing and the diameter ratio of the heat transfer surface to nozzle. The numerical results showed that the location of vortex on the impigning plate was getting far from symmetry axis with the increasing of the exit Re number. For the fully developed tubular nozzle the stagnation point heat transfer coefficient enhanced with the elevating of exit Re and the decreasing of nozzle diameter, is independent of the diameter ratio of the heat transfer surface to nozzle and presented peak value in 5
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| Keywords: | jet impingement heat transfer numerical simulation |
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