Numerical modeling of two-phase flow with contact discontinuities

Ronald Remmerswaal, Arthur Veldman

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When simulating high Reynolds number two-phase flow, boundary layers develop at the interface, which are much thinner compared to the capillary length-scales that are of interest. Resolving such an interface layer is expensive and therefore it is often not resolved in a simulation.Numerically such an under resolved interface layer results in a velocity discontinuity tangential to the interface. We propose to include such tangential velocity discontinuities in our numerical model. This results in a sharp two-fluid model for two-phase flow, where only the interface-normal component of the velocity field is smooth. This condition is implicitly enforced via a new jump condition on the pressure gradient, which we discretize using a multidimensional variant of the ghost fluid method [6].Results are shown of breaking waves [2] as well as (breaking) waves impacting a solid wall [3] where we compare to state-of-the-art methods [3, 4]. We show that our proposed method is able to accurately simulate high Reynolds number two-phase flow without the need for resolving, or artificially thickening,of the interface layer.
Originele taal-2English
Titel14th WCCM ECCOMAS Congress 2020
RedacteurenF. Chinesta, R. Abgrall, O. Allix, M. Kaliske
Aantal pagina's12
StatusPublished - 11-jan.-2021
EvenementWCCM ECCOMAS Congress 2020 - Virtual Congress, Paris, France
Duur: 11-jan.-202115-jan.-2021
Congresnummer: 14


ConferenceWCCM ECCOMAS Congress 2020

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