| 压缩性对亚声速圆盘空化器超空泡流动的影响 |
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| 引用本文： | 孟庆昌,张志宏,刘巨斌,顾建农.压缩性对亚声速圆盘空化器超空泡流动的影响[J].华中科技大学学报(自然科学版),2011(3):51-54. |
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| 作者姓名： | 孟庆昌 张志宏 刘巨斌 顾建农 |
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| 作者单位： | 海军工程大学理学院; |
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| 基金项目： | 国家自然科学基金资助项目(10772196) |
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| 摘 要： | 以超空泡射弹为研究背景,分析了水的压缩性对亚声速圆盘空化器超空泡流场的影响,基于势流理论建立了理想可压缩超空泡流场数学模型并进行数值求解.计算了极低空泡数(10-4量级)的超空泡流动,在此基础上分析了压缩性对超空泡形态和射弹阻力系数的影响.结果表明:在亚声速条件下,流体压缩性使超空泡外形膨胀,阻力系数增加;计算结果与试验数据和经验公式符合较好.
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| 关 键 词： | 流体力学 势流 有限体积法 超空泡 射弹 压缩性 |
Effect of the compressibility on supercavitating flow over subsonic disk cavitators |
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| Meng Qingchang Zhang Zhihong Liu Jubin Gu Jiannong.Effect of the compressibility on supercavitating flow over subsonic disk cavitators[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(3):51-54. |
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| Authors: | Meng Qingchang Zhang Zhihong Liu Jubin Gu Jiannong |
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| Institution: | Meng Qingchang Zhang Zhihong Liu Jubin Gu Jiannong(College of Science,Naval University of Engineering,Wuhan 430033,China) |
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| Abstract: | To deal with the effect of compressible fluid on the supercavitating projectile,a mathematical model and a numerical method were developed based on the ideal compressible potential flow.The supercavitating flow with tiny cavitation number was calculated.On the basis of solving subsonic supercavitating flow over disk cavitator,the effects on supercavity shape,density distribution and drag coefficient of projectile were analyzed.Supercavity shape is enlarged and drag coefficient becomes larger because of the ... |
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| Keywords: | fluid dynamics potential finite volume method(FVM) supercavity projectile compressibility |
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