Wall-modeled large-eddy simulation of turbulent smooth body separation using the OpenFOAM flow solver Article Swipe
Christoffer Hansen
,
Xiang I. A. Yang
,
Mahdi Abkar
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2412.16668
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2412.16668
This work investigates the current wall-modeled large-eddy simulation (WMLES) capabilities of the open-source computational fluid dynamics solver OpenFOAM, which is used widely in academia and industry. This is achieved by a simulation campaign that covers both attached and smooth body separation cases. The campaign includes simulations using four different wall models and aims to investigate the sensitivity of the results to changes in numerics, mesh resolution, and subgrid-scale modeling. The results demonstrate that two main factors largely determine OpenFOAM-based WMLES performance. These are the discretization of the convective term and wall modeling. For the former, the best performance in the attached case is achieved with low-dissipation numerics, however, for the smooth body separation case, more dissipative numerics give the best performance. For the latter, we find that both equilibrium and non-equilibrium wall models perform well in the attached case but that the non-equilibrium models significantly improve the prediction of smooth body separation. Still, the non-equilibrium wall model results do not show a uniform improvement over equilibrium models. This is explained by an inconsistent accounting of non-equilibrium physics in these models, i.e., including the pressure gradient term without also including the convective term. This highlights the potential for future performance improvements by using non-equilibrium wall models that consistently account for both the convective and pressure gradient terms.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- http://arxiv.org/abs/2412.16668
- https://arxiv.org/pdf/2412.16668
- OA Status
- green
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4405766276
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4405766276Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2412.16668Digital Object Identifier
- Title
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Wall-modeled large-eddy simulation of turbulent smooth body separation using the OpenFOAM flow solverWork title
- Type
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preprintOpenAlex work type
- Language
-
enPrimary language
- Publication year
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2024Year of publication
- Publication date
-
2024-12-21Full publication date if available
- Authors
-
Christoffer Hansen, Xiang I. A. Yang, Mahdi AbkarList of authors in order
- Landing page
-
https://arxiv.org/abs/2412.16668Publisher landing page
- PDF URL
-
https://arxiv.org/pdf/2412.16668Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
-
https://arxiv.org/pdf/2412.16668Direct OA link when available
- Concepts
-
Large eddy simulation, Solver, Turbulence, Mechanics, Separation (statistics), Flow (mathematics), Flow separation, Physics, Computer science, Mathematics, Mathematical optimization, Machine learningTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
- Related works (count)
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10Other works algorithmically related by OpenAlex
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