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
Abstract
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.
| Item Type: | Master Thesis |
|---|---|
| Erschienen: | 2023 |
| Creators: | Habes, Constantin |
| 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 |
| Refereed: | 16 November 2022 |
| DOI: | 10.26083/tuprints-00023030 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/23030 |
| Abstract: | 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 04 Department of Mathematics > Analysis 04 Department of Mathematics > Analysis > Mathematical Modeling and Analysis 04 Department of Mathematics > Mathematical Modelling and Analysis |
| Date Deposited: | 03 Feb 2023 13:10 |
| Last Modified: | 07 Feb 2024 11:55 |
| PPN: | |
| Referees: | Bothe, Prof. Dr. Dieter ; Marschall, Dr. Holger |
| Refereed / Verteidigung / mdl. Prüfung: | 16 November 2022 |
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