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Towards a unified multiphysics framework applied to reactive bubbly flows

Habes, Constantin (2023)
Towards a unified multiphysics framework applied to reactive bubbly flows.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00023030
Master Thesis, Primary publication, Publisher's Version

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Item Type: Master Thesis
Type of entry: Primary publication
Title: Towards a unified multiphysics framework applied to reactive bubbly flows
Language: English
Referees: Bothe, Prof. Dr. Dieter ; Marschall, Dr. Holger
Date: 2023
Place of Publication: Darmstadt
Collation: 85 Seiten
Date of oral examination: 16 November 2022
DOI: 10.26083/tuprints-00023030

Historically, CFD codes implementing arbitrary Lagrangian Eulerian interface tracking (ALEIT) for the simulation of bubbly flows were highly customised for this specific application. However, taking a broader look at multiphase flows in general, it is noticeable that they resemble other multiphysics systems in their basic structure. Analogous to Fluid-Structure-Interaction (FSI) or conjugate heat transfer problems (CHT), multiphase systems also involve several regions with special physical properties that interact with each other across interfaces. Exploiting these structural similarities, a novel unified multiphysics framework for OpenFOAM named multiRegionFoam is introduced, which incorporates the ALE-IT and is tested for its application towards reactive bubbly flows. In this context, the parallelisability of the new framework is addressed in particular, since interface coupled multiphysics simulations in general and simulations of reactive bubbly flows in particular are very computationally intensive. Furthermore, a Dirichlet-Neumann algorithm convergence control based on interface residuals is implemented and tested.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-230304
Classification DDC: 000 Generalities, computers, information > 004 Computer science
500 Science and mathematics > 510 Mathematics
600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 04 Department of Mathematics > Mathematical Modelling and Analysis
Date Deposited: 03 Feb 2023 13:10
Last Modified: 07 Feb 2023 08:02
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23030
PPN: 50435874X
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