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Euler-Euler and Euler-Lagrange approaches to cavitation modelling in marine applications
Publikationstyp
Conference Paper
Date Issued
2011
Sprache
English
Institut
Start Page
544
End Page
555
Citation
Computational methods in marine engineering IV : proceedings of the IV International Conference on Computational Methods in Marine Engineering. - Barcelona, 2011 : Seite 544-555 (2011)
Contribution to Conference
Scopus ID
Publisher
International Center for Numerical Methods in Engineering (CIMNE)
Two different approaches to cavitation modelling are investigated in the paper. With the Euler-Euler approach vapour-volume fraction is computed based on a volume of fluid method in combination with a simple mass-transfer model for cavitation. Using an Euler-Lagrange approach, separate equations for bubble size and motion are solved for each of the bubbles/nuclei. Computed bubbles are subsequently mapped to an Eulerian field to obtain vapour-volume fraction of the Eulerian mixture field. Numerical results of a 2D hydrofoil and a propeller flow demonstrate strong parameter dependency for the Euler-Euler approach. Providing the correct (measured) initial bubble distribution, Euler-Lagrange techniques display a fair amount of predictive accuracy as demonstrated for a 2D hydrofoil.
Subjects
Cavitation
Computational methods
Euler-Euler
Euler-Lagrange
Marine engineering
DDC Class
600: Technik
620: Ingenieurwissenschaften