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Christian Lehr, Pascal Munsch, Romuald Skoda and Andreas Brümmer
The acoustic properties of a single-stage centrifugal pump with low specific speed are investigated by means of compressible 3D CFD simulations (URANS) and experiments. In order to determine the pump?s acoustic transmission and excitation characteristics...
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Yanzhao Wang, Guobin Xu, Zhicheng Liu and Deming Yang
The slip?stick vibration intensity of a plane gate is usually large, which often brings serious safety risks to itself and the auxiliary structure. The slip?stick vibration of a plane gate is investigated using an experimental model test. The test condit...
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Wujia Li, Jiang Fan, Hongbin Xu, Wang Zhao, Qingze Meng and Yumin Su
The issue of fatigue in modern hydraulic pipelines is increasingly severe, and there remains a lack of effective prediction methods for pipeline fatigue life. In practical engineering, hydraulic pipelines are primarily subjected to random excitation and ...
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Oscar Scussel, Michael J. Brennan, Jennifer M. Muggleton, Fabrício C. L. de Almeida, Phillip F. Joseph and Yan Gao
In buried plastic water pipes, the predominantly fluid-borne wave is of particular interest, as it plays a key role in the propagation of leak noise. Consequently, it has been studied by several researchers to determine the speed of wave propagation and ...
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Hongzhen Zhu and Jianghai Wu
Pipelines are designed to carry seawater with hydrostatic pressure below sea level in the ship industry. Previously conducted studies have established the FSI (Fluid?Structure Interaction) equations for thin-walled, fluid-filled pipelines based on the Ti...
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Lingxiao Quan, Jing Gao, Changhong Guo and Chen Fu
The hydraulic pipeline vibration noise is one of the main noise sources in submarine stealth conditions. Taking the local hydraulic system of a certain type of submarine as the research object, a model is first developed to simulate water hammer pressure...
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Rui Ma, Fuqiang Shi, Mingxin Juan, Jiao Wang, Jie Jin and Tao Yu
The structure of pipeline systems is complex, and the working environment is harsh. Under the excitation of the engine equipment foundation and pump fluid, it is easy to generate excessive vibration, which seriously affects the safe operation of the equi...
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Yang Yi, Ke Sun, Yongqian Liu, Gang Ma, Chuankai Zhao, Fukang Zhang and Jianhua Zhang
The wave-energy excitation of point absorbers is highly associated with their resonant movement, and harmonic characteristics are of increasing concern in affecting resonance. However, the commonly used linearized power take-off (PTO) systems underestima...
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Julian Kimmerl and Moustafa Abdel-Maksoud
Underwater radiated noise is part of the anthropogenic emissions into the environment and as such a pressing problem for the preservation of the marine ecosystem. In order to direct attention to the most relevant noise sources associated with ships it is...
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Ye Yuan, Weihong Gong, Guojun Wang and Jun Wang
Pitch motion is the key factor affecting the performance characteristics of centrifugal pumps on board ships and exacerbates hydraulic excitation to induce the unsteady vibration of pump units. A hydraulic test platform with swing motion is established t...
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