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Towards unsteady Reynolds-averaged simulation of particle laden flows: Initial adjustments of a direct forcing immersed boundary method
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SYSNO ASEP 0603841 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Towards unsteady Reynolds-averaged simulation of particle laden flows: Initial adjustments of a direct forcing immersed boundary method Author(s) Kubíčková, Lucie (UT-L) ORCID, RID
Studeník, Ondřej (UT-L) ORCID, RID
Kotouč Šourek, M. (CZ)
Isoz, Martin (UT-L) ORCID, RIDNumber of authors 4 Number of pages 2 s. Publication form Online - E Action Multiphase Flow Conference & Short Course (MPF2024) /20./ Event date 11.11.2024 - 15.11.2024 VEvent location Drážďany Country DE - Germany Event type WRD Language eng - English Keywords unsteady RAS ; immersed boundary method ; CFD ; OpenFOAM Subject RIV BA - General Mathematics OECD category Applied mathematics R&D Projects TN02000069 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support UT-L - RVO:61388998 Annotation Two-fluid or high-fidelity models are not truly usable for large scale applications with resolved particle shapes, e.g., simulations of rocks moving over a river bed. A viable alternative is to combine high-fidelity models with phenomenological turbulence modeling while preserving the sharp phase interfaces. In this contribution, we work with our custom high-fidelity model for particle-laden flows, the hybrid fictitious domain-immersed boundary and discrete element method (HFDIB-DEM). The DEM part is used to describe arbitrarily shaped particles and track their movement when affected by fluid. Next, the HFDIB method is a variant of a direct forcing immersed boundary method. The included turbulence models were two-equations models based on Reynolds-averaging (RAS) with Boussinesque hypothesis. In particular, we implemented the k-ω, k-ε, k-ω SST and realizable k-ε models. The new HFDIB-RAS approach was tested on several verification and validation cases with static phase interface so that the results were comparable with standard simulation approaches with geometry conforming meshes. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2025
Number of the records: 1