| 水中圆柱腔流激振荡特性研究 |
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| 引用本文： | 衣云峰,何祚镛.水中圆柱腔流激振荡特性研究[J].中国造船,1996(3):36-47. |
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| 作者姓名： | 衣云峰 何祚镛 |
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| 作者单位： | 哈尔滨工程大学 |
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| 基金项目： | 国家自然科学基金，国防科研课题 |
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| 摘 要： | 在水洞中进行了水中圆柱形腔流激振荡的研究，水洞中的试验结果与空气中的结果进行了对经，得了圆柱形腔在空气和水两种介质中流激振荡特性的共同点和差别。文中还根据腔底多层结构计算了腔底反射系数，然后导出水中多层腔底结构腔内的驻波共振频率计算关系式，并由此提出了用于计算任意弹性底圆柱腔驻波共振的图解算法及具有广泛意义的图解图，算得的波共振频率下试验值比较接近。还进行了流引起腔中流腕中流噪声的均方压力随流速变
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| 关 键 词： | 空腔 振荡 流噪声 船舶试验 水洞试验 风洞试验 |
A STUDY ON FLOW-INDUCED OSCILLATION OF CYLINDRICAL CAVITY IN WATER TUNNEL |
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| YI Yunfeng, HE Zuoyong.A STUDY ON FLOW-INDUCED OSCILLATION OF CYLINDRICAL CAVITY IN WATER TUNNEL[J].Shipbuilding of China,1996(3):36-47. |
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| Authors: | YI Yunfeng HE Zuoyong |
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| Institution: | Harbin Engineering University |
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| Abstract: | The flow-induced oscillation of cylindrical cavities is studied in water tunnel, and is compared with the oscillation in air. The reflection coefficient of the bottom of the cavity is calculated. The bottom is considered as a multi-layer planar structure. The formulae for calculating the frequency of standing wave resonance of the cavity are expressed. A monogram for calculation of frequencies of standing wave resonance of cylindrical cavity with any elastic bottom is presented. The calculated frequencies are coincident with experimental results for a cylindrical cavity with piston-bottom made with 3-layered plates- In addition, the RMS's of pressure in the cavity induced by water flow with different speed are measured and analysed. The RMS of wide-band pressure is approximately proportiQnal to speed square. |
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| Keywords: | Cavity Oscillation Flow noise Hydrodynamic noise |
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