| 楔体外部超空泡形状预测 |
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| 引用本文： | 杨洪澜,张嘉钟,赵存宝,黄文虎.楔体外部超空泡形状预测[J].哈尔滨理工大学学报,2006,11(4):106-110. |
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| 作者姓名： | 杨洪澜 张嘉钟 赵存宝 黄文虎 |
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| 作者单位： | 哈尔滨工业大学,航天工程与力学系,黑龙江,哈尔滨,150001 |
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| 摘 要： | 研究了薄楔体外部定常和非定常超空泡流问题.采用时间有限差分离散化方法求解超空泡流积分方程,得到了问题的数值解.给出了Froude数对铅垂超空泡长度和形状的影响,以及楔角或空化数作非周期变化,特别是较高频率脉冲变化时,超空泡长度和形状的非定常变化过程.应用Logvinovich空泡独立膨胀原理对空泡形状的非定常变化过程作了定性解释.
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| 关 键 词： | 超空泡 积分方程方法 空泡独立膨胀原理 |
| 文章编号： | 1007-2683(2006)04-0106-05 |
| 修稿时间： | 2005年10月10 |
Prediction of Wedge's Supercavity Shape |
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| YANG Hong-lan,ZHANG Jia-zhong,ZHAO Cun-bao,HUANG Wen-hu.Prediction of Wedge''''s Supercavity Shape[J].Journal of Harbin University of Science and Technology,2006,11(4):106-110. |
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| Authors: | YANG Hong-lan ZHANG Jia-zhong ZHAO Cun-bao HUANG Wen-hu |
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| Abstract: | Steady and unsteady supercavitating flow around slender wedges is investigated.Solving integral equations of supercavitating flow based on the finite difference time discretization method,some numerical results are obtained.The influence of Froude Number on the length and shape of vertical supercavity is analyzed.The change history of unsteady supercavity's length and shape are investigated when the wedges angel or cavitation number is changed in aperiodic time-dependence,especially in high-frequency impulse.The evolution of unsteady supercavity shape is analyzed qualitatively using G.V.Logvinovich's principle of independence of the cavity section expansion. |
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| Keywords: | supercavitating cavity integral equation methods principle of independence of the cavity section expansion |
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