| 李爱华,槐文信.流动环境中二维铅垂射流的试验研究及数值模拟[J].水利学报,2002,33(12):0049-0055 |
| 流动环境中二维铅垂射流的试验研究及数值模拟 |
| Experimental study and numerical simulation of 2-D vertical jet in flowing ambient |
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| DOI： |
| 中文关键词: 射流 标准κ-ε紊流模型 湍动能平衡 出露点 试验研究 |
| 英文关键词: jet κ-εturbulence flow model energy balance f low out point of polluted water experimental study |
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| 中文摘要: |
| 使用超声测速仪（Micro ADV）对流动环境中二维铅垂射流进行了试验研究，得出了流速比为8时的流速分布图等资料。进而采用标准κ-ε湍流模型对该类流动进行数值模拟和对比研究，给出了涡心位置、分离点位置以及出露长度与射流比的函数关系式；并选用涡心和分离点两个断面，分析了κ方程和ε方程中诸项的作用，结果表明产生项和耗散项的贡献是主要的。扩散项的总贡献为零，只起到能量扩散作用。 |
| 英文摘要: |
| The velocity distribution in flowing water in the vicinity of the outlet of a vertical jet is measured by means of Micro ADV system. The flow velocity ratio of jet to ambient water flow is 8. The standard κ-εturbulence flow model is applied to numerically simulate the flow field. The relationships between velocity ratio and vortex center position, point of separation and flow out point of polluted water are deduced from numerical simulation and experimental data. |
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