Abstract
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.
Original language | English |
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Title of host publication | 14th WCCM ECCOMAS Congress 2020 |
Editors | F. Chinesta, R. Abgrall, O. Allix, M. Kaliske |
Number of pages | 12 |
Publication status | Published - 11-Jan-2021 |
Event | WCCM ECCOMAS Congress 2020 - Virtual Congress, Paris, France Duration: 11-Jan-2021 → 15-Jan-2021 Conference number: 14 |
Conference
Conference | WCCM ECCOMAS Congress 2020 |
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Country/Territory | France |
City | Paris |
Period | 11/01/2021 → 15/01/2021 |