| 超空泡回转体减阻特性研究 |
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| 引用本文： | 傅慧萍,鲁传敬,李杰.超空泡回转体减阻特性研究[J].船舶力学,2004,8(3):1-7. |
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| 作者姓名： | 傅慧萍 鲁传敬 李杰 |
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| 作者单位： | 上海交通大学工程力学系,上海,200030;上海交通大学工程力学系,上海,200030;上海交通大学工程力学系,上海,200030 |
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| 基金项目： | SupportedbyChinesePost-DoctorScienceFoundationunderGrantNo.2002032149 |
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| 摘 要： | 基于Fluent 6.0的气泡两相流模型对超空泡回转体的减阻特性进行了数值研究.内容包括:外形对阻力及超空泡形状的影响;超空泡控制;阻力系数随空泡数的变化规律;长细比对减阻率的影响.超空泡减阻机理的研究表明:超空泡不仅可以减小回转体的摩擦阻力,还可以减小回转体的压差阻力.在外形、长细比和空泡数以及工程可实现性等诸多因素中,存在着一个最佳组合,使减阻率最高.
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| 关 键 词： | 超空化 超空泡 减阻 |
Numerical Research on Drag Reduction Characteristics of Supercavitating Body of Revolution |
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| FUHui-ping LUChuan-jing LIJie.Numerical Research on Drag Reduction Characteristics of Supercavitating Body of Revolution[J].Journal of Ship Mechanics,2004,8(3):1-7. |
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| Authors: | FUHui-ping LUChuan-jing LIJie |
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| Institution: | DepartmentofEngineeringMechanics,ShanghaiJiaoTongUniversity,Shanghai200030,China |
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| Abstract: | Drag reduction characteristics of supercavitating body of revolution was researched numerically with a bubble two-phase flow model embodied in commercial CFD code Fluent 6.0.The work included the effects of body shape on drag coefficient and supercavity sizes; supercavity control; drag coefficient Cd as a function of cavitation number; and the effect of the ratio of length L to diameter D on drag reduction rate. Research on drag reduction mechanism of supercavitation shows that supercavitation can reduce not only the friction drag coefficient but also the pressure drag coefficient. There may be a best combination among body shape, the ratio L/D, cavitation number, engineering feasibility and so on, which makes the drag reduction ratehighest. |
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| Keywords: | supercavitation supercavity drag reduction |
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