| 非定常膨胀过程中水蒸汽凝结对流场影响的数值分析 |
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| 引用本文： | 王美利,罗喜胜,杨基明.非定常膨胀过程中水蒸汽凝结对流场影响的数值分析[J].计算物理,2006,23(1):109-114. |
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| 作者姓名： | 王美利 罗喜胜 杨基明 |
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| 作者单位： | 1. 中国科学技术大学,力学与机械工程系,安徽,合肥,230027
2. Shock Wave Laboratory,RWTH Aachen,Templergraben 55,52056 Aachen,Germany |
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| 摘 要： | 采用数值方法对激波管非定常膨胀过程中，汽液相变与流场的相互作用进行了模拟．主要研究了含有水蒸汽的混合气体在激波管中的非平衡凝结过程以及其对流场的作用．结果表明由于水蒸气的凝结释放热量对流场局部进行加热，使流场参数发生扰动而产生凝结激波．经过与凝结激波的相互作用后，流场参数和结构将发生明显的变化．
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| 关 键 词： | 水蒸汽 成核 凝结 膨胀波 |
| 文章编号： | 1001-246X（2006）01-0109-06 |
| 收稿时间： | 2004-10-18 |
| 修稿时间： | 2005-04-19 |
Numerical Analysis of Water Vapor Condensation During Unsteady Expansion in a Shock Tube |
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| WANG Mei-Li,LUO Xi-sheng,YANG Ji-ming.Numerical Analysis of Water Vapor Condensation During Unsteady Expansion in a Shock Tube[J].Chinese Journal of Computational Physics,2006,23(1):109-114. |
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| Authors: | WANG Mei-Li LUO Xi-sheng YANG Ji-ming |
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| Institution: | 1. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China ; 2. Shock Wave Laboratory, RWTH Aachen, Templergraben 55,52056 Aachen, Germany |
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| Abstract: | A numerical investigation is carried out for the phase change in the unsteady expansion of humid gases. The research is mainly focused on the process of water vapor non-equilibrium condensation in the presence of nitrogen and the influence of the condensation on the flow field in a shock tube. It is shown that the parameters of the flow field are disturbed and a condensation shock is generated due to the sudden release of the latent heat of condensation. With the condensation shock, the parameters and the structure of the flow field change dramatically. |
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| Keywords: | water vapor nucleation condensation expansion wave |
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