| 绕弹性水翼非定常流动的动力响应计算研究 |
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| 引用本文： | 王建东,刘影,吴钦.绕弹性水翼非定常流动的动力响应计算研究[J].车辆与动力技术,2014(4):45-49. |
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| 作者姓名： | 王建东 刘影 吴钦 |
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| 作者单位： | 北京理工大学机械与车辆工程学院,北京,100081;北京理工大学机械与车辆工程学院,北京,100081;北京理工大学机械与车辆工程学院,北京,100081 |
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| 基金项目： | 国家自然科学基金青年科学基金项目 |
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| 摘 要： | 选取NACA66水翼作为对象来研究绕弹性水翼非定常流动的水弹性响应特性,采用混合耦合算法针对Re =75 000的不稳定的片状/云状空化（σ=1.4）流动进行了数值计算,并与实验结果进行了对比.数值计算结果与实验结果基本吻合,较好地模拟了非定常空化初生、发展、断裂和脱落的周期性过程.结果显示,在片/云状空化下,弹性水翼的空化脱落频率与相应的实验结果基本一致;扭转振动使空化不稳定程度加剧,形成了波动的不稳定泡状形态.
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| 关 键 词： | 弹性水翼 混合耦合算法 动力响应 |
Investigation of Dynamical Response on Transient Flows around a Flexible Hydrofoil |
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| WANG Jian-dong,LIU Ying,WU Qin.Investigation of Dynamical Response on Transient Flows around a Flexible Hydrofoil[J].Vehicle & Power Technology,2014(4):45-49. |
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| Authors: | WANG Jian-dong LIU Ying WU Qin |
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| Affiliation: | (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China) |
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| Abstract: | The hydro-elastic transient response of a NACA66 hydrofoil was studied in the turbulent flow. By using a hybrid coupling algorithm, the numerical analysis of the unsteady sheet/cloud cavitating flow field was carried out in the Reynolds numbers of 750000. The periodic process of the unsteady cavitating flow was simulated. The results showed that under the condition of the unsteady sheet/cloud cavitating flow, the frequency of cavitation shedding agreed well with the experiment results. Unstable bubbles were formed and the instability of cavitation was aggravated due to the twisting and bending deformation. |
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| Keywords: | Flexible Hydrofoil Hybrid coupling algorithm Dynamical Response |
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