| 栅中水翼的空化流体动力特性 |
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| 引用本文： | 时素果,余志毅,俞启东,王国玉.栅中水翼的空化流体动力特性[J].北京理工大学学报,2010,30(9):1042-1046. |
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| 作者姓名： | 时素果 余志毅 俞启东 王国玉 |
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| 作者单位： | 北京理工大学,机械与车辆学院,北京,100081;北京理工大学,机械与车辆学院,北京,100081;北京理工大学,机械与车辆学院,北京,100081;北京理工大学,机械与车辆学院,北京,100081 |
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| 基金项目： | 国家自然科学基金资助项目，国家教育部高等学校博士学科点专项科研基金资助课题 |
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| 摘 要： | 采用数值模拟的方法对空化条件下Clark-y水翼和栅中水翼的水动力特性进行了研究.计算中,空化模型采用基于Rayleigh-Plesset方程的Kubota模型,湍流模型则采用基于滤波器的混合湍流模型.通过实验结果对计算结果的可靠性进行了验证.结果表明,受上下翼型的影响,栅中水翼吸力面的低压区和压力面的高压区相对水翼情况有所收缩,造成平均升力系数变小;与水翼相比,栅中水翼的升阻力变化周期更长,波动范围更大.
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| 关 键 词： | 栅中水翼 空化 滤波器模型 动力特性 |
| 收稿时间： | 2009/6/25 0:00:00 |
Dynamical Characteristics of Cavitating Flow Around a Cascade Hydrofoil |
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| SHI Su-guo,YU Zhi-yi,YU Qi-dong and WANG Guo-yu.Dynamical Characteristics of Cavitating Flow Around a Cascade Hydrofoil[J].Journal of Beijing Institute of Technology(Natural Science Edition),2010,30(9):1042-1046. |
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| Authors: | SHI Su-guo YU Zhi-yi YU Qi-dong and WANG Guo-yu |
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| Institution: | SHI Su-guo,YU Zhi-yi,YU Qi-dong,WANG Guo-yu (School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | The dynamics of cavitating flow around a hydrofoil and a cascade hydrofoil are investigated comparatively by numerical method. The Kubota cavitation model which is based on the equation of Rayleigh-Plesset and the filter-based turbulence model are used in numerical computation. The results show that the low pressure region of the suction side and the high pressure region of the pressure side of the cascade hydrofoil are reduced, compared with the hydrofoil, the average lift coefficient becomes smaller. The ... |
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| Keywords: | cascade hydrofoil cavitations filter based model dynamic characteristics |
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