| 空泡闭合区压力特性试验研究(英文) |
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| 引用本文： | 王亚东,袁绪龙,张宇文.空泡闭合区压力特性试验研究(英文)[J].船舶与海洋工程学报,2012,11(4):462-468. |
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| 作者姓名： | 王亚东 袁绪龙 张宇文 |
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| 作者单位： | College of Marine,Northwestern Polytechnical University |
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| 基金项目： | Supported by the National Natural Science Foundation of China(11172241);Northwestern Polytechnical University Foundation for Fundamental Research.(NPU-FFR-1015) |
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| 摘 要： | The most complicated component in cavitating flow and pressure distribution is the flow in the cavity closure line. The cavitating flow and pressure distribution provide critical aspects of flow field details in the region. The integral of pressure results of the hydrodynamic forces, indicate domination in the design of a supercavitating vehicle. An experiment was performed in a water tunnel to investigate the pressure characteristics of the cavity closure region. Ventilation methods were employed to generate artificial cavity, and the ventilation rate was adjusted accordingly to obtain the desired cavity length. An array of pressure transducers was laid down the cavity closure line to capture pressure distribution in this region. The experimental results show that there is a pressure peak in the cavity closure region, and the rise rate of pressure in space tends to be higher in the upwind side when the flow is non-axisymmetric. The transient pressure variations during the cavity formation procedure were also present. The method of measurement in this paper can be referenced by engineers. The result helps to study the flow pattern of cavity closure region, and it can also be used to analyze the formation of supercavitating vehicle hydrodynamics.
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| 关 键 词： | hydrodynamics cavity closure region pressure characteristic water tunnel experiment pressure distribution supercavitating vehicle |
Experimental investigation on the pressure characteristics of cavity closure region |
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| Yadong Wang,Xulong Yuan,Yuwen Zhang.Experimental investigation on the pressure characteristics of cavity closure region[J].Journal of Marine Science and Application,2012,11(4):462-468. |
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| Authors: | Yadong Wang Xulong Yuan Yuwen Zhang |
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| Institution: | College of Marine, Northwestern Polytechnical University, Xi’an 710072, China |
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| Abstract: | The most complicated component in cavitating flow and pressure distribution is the flow in the cavity closure line. The cavitating flow and pressure distribution provide critical aspects of flow field details in the region. The integral of pressure results of the hydrodynamic forces, indicate domination in the design of a supercavitating vehicle. An experiment was performed in a water tunnel to investigate the pressure characteristics of the cavity closure region. Ventilation methods were employed to generate artificial cavity, and the ventilation rate was adjusted accordingly to obtain the desired cavity length. An array of pressure transducers was laid down the cavity closure line to capture pressure distribution in this region. The experimental results show that there is a pressure peak in the cavity closure region, and the rise rate of pressure in space tends to be higher in the upwind side when the flow is non-axisymmetric. The transient pressure variations during the cavity formation procedure were also present. The method of measurement in this paper can be referenced by engineers. The result helps to study the flow pattern of cavity closure region, and it can also be used to analyze the formation of supercavitating vehicle hydrodynamics. |
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