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Estimation of cavitation erosion intensity using CFD: Numerical comparison of three different methods

Claes Eskilsson (Institutionen för sjöfart och marin teknik, Marin teknik) ; Rickard Bensow (Institutionen för sjöfart och marin teknik, Marin teknik)
Proceedings of the Fourth International Symposium on Marine Propulsors Vol. 1 (2015), p. 9-16.
[Konferensbidrag, refereegranskat]

The material erosion potentially caused by cavitation is a major problem in propulsion and hydro-machinery. In order to numerically predict the cavitation erosion several methodologies have been presented in the literature. In this paper we look into three different approaches for obtaining estimates of the potential cavitation erosion intensity from CFD simulations: two using the pressure or the vapour fraction obtained from macroscopic simulation and one based on the pressure obtained from microscopic bubble dynamics. The three methods are applied to the case of cavitating flow over a NACA0015 foil. None of the methods was found to successfully predict the erosive behavior. This results highlight the need for further work in this area.

Nyckelord: Cavitation, Erosion, CFD, Discrete Bubble Method



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Denna post skapades 2015-10-02. Senast ändrad 2015-10-02.
CPL Pubid: 223570

 

Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik, Marin teknik (2015-2017)

Ämnesområden

Transport
Farkostteknik
Strömningsmekanik

Chalmers infrastruktur

C3SE/SNIC (Chalmers Centre for Computational Science and Engineering)