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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. (Publisher's Version)
Darmstadt, Technische Universität Darmstadt, DOI: 10.26083/tuprints-00023030,
[Master Thesis]

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Item Type: Master Thesis
Status: Publisher's Version
Title: Towards a unified multiphysics framework applied to reactive bubbly flows
Language: English

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.

Place of Publication: Darmstadt
Collation: 85 Seiten
Classification DDC: 000 Allgemeines, Informatik, Informationswissenschaft > 004 Informatik
500 Naturwissenschaften und Mathematik > 510 Mathematik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 04 Department of Mathematics > Mathematical Modelling and Analysis
Date Deposited: 03 Feb 2023 13:10
Last Modified: 07 Feb 2023 08:02
DOI: 10.26083/tuprints-00023030
URN: urn:nbn:de:tuda-tuprints-230304
Referees: Bothe, Prof. Dr. Dieter ; Marschall, Dr. Holger
Date of oral examination: 16 November 2022
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23030
PPN: 50435874X
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