Numerical investigation of the cavitation effect on natural frequencies of a hydrofoil

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids
dc.contributor	Universitat Politècnica de Catalunya. CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica
dc.contributor.author	Liu, Xin
dc.contributor.author	Zhou, Lingjiu
dc.contributor.author	Escaler Puigoriol, Francesc Xavier
dc.contributor.author	Wang, Zhengwei
dc.date	2016
dc.identifier.citation	Liu, X., Zhou, L., Escaler, X., Wang, Z. Numerical investigation of the cavitation effect on natural frequencies of a hydrofoil. A: International Symposium on Transport Phenomena and Dynamics of Rotating Machinery. "Proceedings of the 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery". Honolulu: 2016, p. 1-4.
dc.identifier.uri	http://hdl.handle.net/2117/87223
dc.language.iso	eng
dc.relation	http://isromac-isimet.univ-lille1.fr/upload_dir/finalpaper/192.ISROMAC-192.pdf
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria mecànica
dc.subject	Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
dc.subject	Cavitation
dc.subject	Seaplanes
dc.subject	Added mass
dc.subject	Sheet cavitation
dc.subject	Fluid-structure interaction
dc.subject	Mode transition
dc.subject	Cavitació
dc.subject	Hidroavions
dc.title	Numerical investigation of the cavitation effect on natural frequencies of a hydrofoil
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	The added mass effects on a NACA0009 hydrofoil under cavitation conditions determined in a cavitation tunnel have been numerically simulated using finite element method (FEM). Based on the validated model, the effects of averaged properties of the cavity considered as a two-phase mixture have been evaluated. the simulation results point out that the average properties of the cavity, considered as a mixture of vapor/water, have a significant effect on added mass coefficients and mode shapes. These effects appear to be more important for higher modes of vibration. For instance, the first torsion mode can evolve towards the second bending mode when reducing the cavity void ratio from 1 to 0.9.

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