Abstract
In an atrocious ocean environment, the lateral propulsion hole could potentially be partly out of water and capture an air cavity. Bubbles would form when the captured air cavity escapes underwater and they may affect the performance of the sonar. The common commercial computational fluid dynamics software CFX was adopted to calculate the ambient flow field around the lateral propulsion hole generated by a moving vessel. The oscillation of the spherical bubble was based on the Rayleigh-Plesset equation and its migration was modeled using the momentum equation. The radiated noise of the oscillating bubble was also studied. The aim is that the results from this paper would provide some insight into corresponding fluid and acoustic study.
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Foundation item: Supported by the National Science Foundation of China (11002038), Key Project of National Natural Science Funds (50939002), National Defense Foundation Scientific Project (B2420110011), the National Science Foundation for Young Scientists of China (51009035), and Natural Science Funds of Heilongjiang Province (E201047,A200901).
Baoyu Ni was born in 1986. He is a PhD candidate at Harbin Engineering University, and a visiting research student at University College London (UCL). His current research interests are underwater bubble dynamics, and coupled fluid-structure analysis.
Shaoshi Dai was born in 1976. She is a lecturer at College of Shipbuilding Engineering, Harbin Engineering University. Her current research interests include fluid-structure interaction, structural dynamics, etc.
Rui Han was born in 1989. She is a graduate at Harbin Engineering University, and her current research interest is bubbly flow.
Longquan Sun was born in 1983. He is a lecturer at College of Shipbuilding Engineering, Harbin Engineering University. His current research interests are ship structural dynamics and underwater acoustic design.
Hailong Chen was born in 1980.He is a research fellow at Harbin Engineering University. His current research interests include fluid-structure interaction, structural dynamics, etc.
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Ni, B., Dai, S., Han, R. et al. Pilot study on the oscillation and migration of a spherical bubble escaping from the lateral propulsion hole. J. Marine. Sci. Appl. 11, 169–177 (2012). https://doi.org/10.1007/s11804-012-1119-0
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DOI: https://doi.org/10.1007/s11804-012-1119-0