20.500.12556/DiRROS-21799 Numerical transfer towards unresolved morphology representation in the MultiMorph model The morphology-adaptive multifield two-fluid model MultiMorph focuses on the reliable and robust simulation of interfacial multiphase flows in industrial applications. The idea is to combine the Volume-of-Fluid approach with the Euler-Euler approach to model both large and small scale interfacial structures efficiently. The choice of the local representation of interfacial structures, such as bubbles or droplets, by either the first or the second of the aforementioned basic method strongly depends on the ratio of the length scale of the interface feature to the grid spacing. In case the computational grid gets too coarse to locally resolve an interfacial structure, a morphology transfer is required. Such a transfer process allows to convert resolved fluid into non-resolved one, i.e. changing from a continuous description to a disperse one. A formulation for such a numerically motivated morphology transfer process is presented. It is validated with a case of a two-dimensional single rising bubble on a grid with gradually varying cell size. The model is then applied to two further cases: an oil–water phase inversion and a water jet plunging into a free water surface. Hereby, functionality, robustness and feasibility of the proposed morphology transfer mechanism are demonstrated. This work contributes to a hybrid modelling approach for the simulation of two-phase flows adapting the numerical representation depending on local flow morphology and on available computational resources jedrska tehnika mehanika fluidov simulacije true false true Elsevier Nizozemska Angleški jezik Slovenski jezik © 2024 The Author(s). Neznano 2025-03-28 15:18:37 2025-03-28 15:18:37 2025-10-24 03:49:52 0000-00-00 00:00:00 2024 0 0 11 str. Art. 113470 Vol. 428 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-03-28 2024-07-11 2024-07-19 621.039 0029-5493 0.1016/j.nucengdes.2024.113470 204263939 RAZ_Meller_Richard_2024.pdf RAZ_Meller_Richard_2024.pdf 1 FFBCBFCCBEF7A9FA7BA21FCBCB31807F f32eba8a612b27983bb0d366051e3e7afe854ef6fe6f4c8263710367de82cded ff35828b-0bdf-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31419 Institut Jožef Stefan 0 0 0