<div class="csl-bib-body">
<div class="csl-entry">Bösenhofer, M. (2024, July 26). <i>On the accuracy of operator splitting for reactive flows in OpenFOAM</i> [Poster Presentation]. 40th International Symposium on Combustion - Emphasizing Energy Transition, Milano, Italy. https://doi.org/10.34726/7502</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/205369
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dc.identifier.uri
https://doi.org/10.34726/7502
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dc.description.abstract
OpenFOAM® (OF) is gaining ever-increasing momentum for simulating reactive flows like combustion. However, the accuracy of capturing the complex interaction between chemistry and transport is hardly studied in the literature. A first theoretical investigation of OF’s operator splitting to dived chemistry and transport has been studied in a recent work by the author and revealed that OF cannot capture near-ignition and near-extinction events and that steady-state results are influenced by time step size. This work investigates strategies to improve OF’s operator splitting algorithm.
A well-stirred scalar test case and combustion test case known to be challenging for operator splitting schemes are used to evaluate the accuracy and steady-state preserving properties of the OF and variations of the OF splitting scheme. Additionally, the stability properties and steady-state preservence are evaluated analytically.
The analytical analysis revealed that OF employs a source term linearization approach instead of a proper operator splitting scheme. The investigated OF splitting variations show similar properties to the original one.
The investigations reveal that the OF splitting scheme is inferior to well-established schemes like the Strang or Simpler splitting scheme. However, implementing these classical splitting schemes is troublesome due to OF’s code structure. At the current code base, variations of the OF linearization approach must be used to improve OF’s reactive flow modeling capabilities.
en
dc.description.sponsorship
FFG - Österr. Forschungsförderungs- gesellschaft mbH
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dc.language.iso
en
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dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
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dc.subject
OpenFOAM
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dc.subject
Operator splitting
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dc.subject
Reactive flows
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dc.subject
Computational Fluid Dynamics
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dc.title
On the accuracy of operator splitting for reactive flows in OpenFOAM
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dc.type
Presentation
en
dc.type
Vortrag
de
dc.rights.license
Creative Commons Namensnennung 4.0 International
de
dc.rights.license
Creative Commons Attribution 4.0 International
en
dc.identifier.doi
10.34726/7502
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dc.relation.grantno
FO999892415
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dc.rights.holder
Markus Bösenhofer
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dc.type.category
Poster Presentation
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tuw.project.title
K1MET Kompetenzzentrum für nachhaltige, digitalisierte Metallurgie - klimaneutral und ressourceneffizient "SusMet4Planet"
