| Numerical Simulation of Condensation-induced Water-hammer |
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| 引用本文： | 姚朝晖,张锡文,王学芳. Numerical Simulation of Condensation-induced Water-hammer[J]. 清华大学学报, 1997, 0(2) |
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| 作者姓名： | 姚朝晖 张锡文 王学芳 |
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| 作者单位： | Yao Zhaohui，Zhang Xiwen，Wang Xuefang Department of Engineering Mechanics，Tsinghua University，Beijing 100084 |
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| 摘 要： | ＮｕｍｅｒｉｃａｌＳｉｍｕｌａｔｉｏｎｏｆＣｏｎｄｅｎｓａｔｉｏｎ┐ｉｎｄｕｃｅｄＷａｔｅｒ┐ｈａｍｍｅｒＹａｏＺｈａｏｈｕｉ（姚朝晖），ＺｈａｎｇＸｉｗｅｎ（张锡文），ＷａｎｇＸｕｅｆａｎｇ（王学芳）ＤｅｐａｒｔｍｅｎｔｏｆＥｎｇｉｎｅｅｒｉｎｇＭ...
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Numerical Simulation of Condensation induced Water hammer |
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| Yao Zhaohui,Zhang Xiwen,Wang Xuefang. Numerical Simulation of Condensation induced Water hammer[J]. Tsinghua Science and Technology, 1997, 0(2) |
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| Authors: | Yao Zhaohui Zhang Xiwen Wang Xuefang |
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| Affiliation: | Yao Zhaohui,Zhang Xiwen,Wang Xuefang Department of Engineering Mechanics,Tsinghua University,Beijing 100084 |
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| Abstract: | Condensation induced water hammer is one kind of water hammer caused by cavity collapse, which occurs frequently in engineering pipelines and can bring about enormous damage. Due to the vapor condensation, the formation and collapse of cavity are transient and of two phase character. In order to simulate the process of cavity formation and collapse, a physical model is suggested. In the model, the cavity boundary is treated as free surface of a calculating field. A numerical solution of the Navier Stokes equation is obtained by using a modified VOF (volume of fluid) method, in which the vapor condensation is considered. With the method, formation and collapse of the cavity are described, and the highest pressure is acquired. The numerical simulation results coincide with experimental results. |
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| Keywords: | condensation induced water hammer cavity collapse numerical simulation modified VOF method |
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