A set of strategies and numerical techniques for simulating weakly compressible two-phase flows is presented. A pressure formulation of the full Baer-Nunziato equations with arbitrary equation of state is presented. Node centered finite volumes are used on unstructured meshes in a fully implicit solver. To mitigate the pressure checkerboarding that arises from the collocated variable arrangement, a Momentum Weighted Interpo-lation formulation is derived specifically for the Baer-Nunziato equations. The proposed approach is thoroughly tested against analytic and experimental data.

Momentum Weighted Interpolation for unsteady weakly compressible two-phase flows on unstructured meshes

Sirianni, G;Re, B;Guardone, A
2023-01-01

Abstract

A set of strategies and numerical techniques for simulating weakly compressible two-phase flows is presented. A pressure formulation of the full Baer-Nunziato equations with arbitrary equation of state is presented. Node centered finite volumes are used on unstructured meshes in a fully implicit solver. To mitigate the pressure checkerboarding that arises from the collocated variable arrangement, a Momentum Weighted Interpo-lation formulation is derived specifically for the Baer-Nunziato equations. The proposed approach is thoroughly tested against analytic and experimental data.
2023
Baer-Nunziato
Weakly compressible
Multiphase
Unstructured
Rhie-Chow
Momentum Weighted Interpolation
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1235784
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