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dc.contributor.authorNegrato, Carlo
dc.contributor.authorLloyd, Thomas
dc.contributor.authorVan Terwisga, Tom
dc.contributor.authorVaz, Guilherme
dc.contributor.authorBensow, Rickard
dc.identifier.citationNegrato, C. [et al.]. Numerical study of cavitation on a NACA0015 hydrofoil: solution verification. A: MARINE VII. "MARINE VII : proceedings of the VII International Conference on Computational Methods in Marine Engineering". CIMNE, 2017, p. 157-170. ISBN 978-84-946909-8-3.
dc.description.abstractAbstract. The present paper analyses a series of Computational Fluid Dynamic simulations of the cavitating flow around a two-dimensional NACA0015 foil. The foil is placed at 6◦ angle of attack and the cavitation number is 1.1. Two mesh designs, namely a block-structured topology and an unstructured topology, are compared; additionally, grid refinements and time step refinements are carried out. Solution Verification is addressed with calculation of the discretization error and the numerical uncertainty. The numerical uncertainty for the average lift coefficient is found to be large, up to 15%. The reason is the difficulty of achieving a grid independent solution: with very fine meshes, the flow shifts from an attached, oscillating sheet cavity pattern to a regime dominated by shedding of cavity clouds. On the other hand, neither the time resolution nor the choice of grid topology influence largely the flow pattern; instead, they only lead to differences in the maximum and minimum cavity size.
dc.format.extent14 p.
dc.rightsOpen access
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subject.lcshFinite element method
dc.subject.lcshMarine engineering
dc.subject.otherCavitation, Verification, NACA0015 foil, RANS, Discretization Error
dc.titleNumerical study of cavitation on a NACA0015 hydrofoil: solution verification
dc.typeConference report
dc.subject.lemacEnginyeria naval
dc.rights.accessOpen Access
local.citation.contributorMARINE VII
local.citation.publicationNameMARINE VII : proceedings of the VII International Conference on Computational Methods in Marine Engineering

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