Title:
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Review of parameters influencing the structural response of a submerged body under cavitation conditions
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Author:
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Escaler Puigoriol, Francesc Xavier; De la Torre Rodriguez, Oscar; Farhat, Mohamed
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids; Universitat Politècnica de Catalunya. CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica |
Abstract:
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Submerged structures that operate under extreme flows are prone to suffer large scale cavitation attached to thei r surfaces. Under such conditions the added mass effects differ from the expected ones in pure liquids. Moreover, the existence of small gaps between the structure and surrounding bodies filled with fluid also influence the dynamic response. A series of experiments and numerical simulations have been carried out with a truncated NACA0009 hydrofoil mounted as a cantilever beam at th e LMH-EPFL cavitation tunnel. The three first modes of vibration have been determined an d analysed under various hydrodynamic conditions ranging from air and still water to partial cavitation and supercavitation. A remote non- intrusive excitation system with piezoelectric patches has been used for the experiments. The effects of the cavity properties and the lateral gap size on the natural frequencies and mode shapes have been determined. As a result, the significance of several parameters in the design of such structures is discussed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria mecànica -Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids -Cavitation -Fluid mechanics -Cavitació -Mecànica de fluids |
Rights:
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http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
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Article - Published version Conference Object |
Published by:
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Institute of Physics (IOP)
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