On the possibility of shock-induced cavitation in submerged cylindrical shell systems |
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| Institution: | 1. Department of Mechanical Engineering, Federal University of Petroleum Resources, Effurun, Delta State, P.M.B 1221, Nigeria;2. Department of Mechanical Engineering, Yaba College of Technology, Lagos State, Nigeria;3. Department of Mechanical Engineering, National Institute of Technology, Manipur, 795004, India;4. Department of Mechanical Engineering Covenant University Ota, Ogun-State, Nigeria;1. Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, PR China;2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, PR China;1. Institute of Nuclear Techniques (NTI) of the Budapest University of Technology and Economics (BME), Budapest, Hungary;2. Department of Thermohydraulics, Centre for Energy Research, Hungarian Academy of Sciences, Budapest, Hungary;3. University of Belgrade, Faculty of Mechanical Engineering, Serbia;4. Budapest University of Technology and Economics, Department of Electronics Technology, Hungary;1. School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China;2. School of Material Science and Engineering Jiangsu University, Zhenjiang, 212013, China |
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| Abstract: | A circular cylindrical shell loaded by one or two fluids and responding to an external shock wave is analyzed in the context of the possible inception of shock-induced cavitation. Several scenarios of fluid contact are considered including a submerged evacuated shell and a submerged fluid-filled shell for three different combinations of the parameters of the internal and external fluids. A semi-analytical shell-shock interaction model is employed in order to predict the regions of the fluids where cavitation is likely to occur, and the respective cavitation development is hypothesized about. The most interesting and practically important finding is that when fluid is present both inside and outside the shell, there exist conditions when cavitation is expected to occur in both the internal and external fluid, resulting in a particularly complex and violent structural re-loading occurring upon the collapse of the respective cavitation regions. The inception of cavitation in the internal fluid alone and in the external fluid alone is also possible. The findings are summarized in a manner that is suitable for use at the pre-design stage as a guide for preliminary assessment of the possibility of shock-induced cavitation in fluid-interacting industrial systems. |
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| Keywords: | Fluid–structure interaction Cavitation |
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