Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM
This paper presents a solution verification and validation study for an overset mesh based numerical wave tank in OpenFOAM, which considers the coupling between a free-surface hydrodynamic flow model, a rigid body motion model and an overset mesh. The coupling between the rigid body motion solver an...
Published in: | Journal of Offshore Mechanics and Arctic Engineering |
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American Society of Mechanical Engineers
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Online Access: | https://e-space.mmu.ac.uk/631826/1/OMAE2023_HaoChen.pdf |
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ftmanchuniv:oai:e-space.mmu.ac.uk:631826 2024-05-19T07:33:23+00:00 Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM Chen, Hao Qian, Ling Cao, Deping 2023-10-05 text https://e-space.mmu.ac.uk/631826/1/OMAE2023_HaoChen.pdf en eng American Society of Mechanical Engineers https://e-space.mmu.ac.uk/631826/ https://doi.org/10.1115/1.4063265 10.1115/1.4063265 https://e-space.mmu.ac.uk/631826/1/OMAE2023_HaoChen.pdf Chen, Hao </view/creators/Chen=3AHao=3A=3A.html>, Qian, Ling </view/creators/Qian=3ALing=3A=3A.html> ORCID logoorcid:0000-0002-9716-2342 and Cao, Deping </view/creators/Cao=3ADeping=3A=3A.html> (2023) Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM. Journal of Offshore Mechanics and Arctic Engineering, 146 (3). 031901-031901. ISSN 0892-7219 cc_by_4 info:eu-repo/semantics/embargoedAccess Article PeerReviewed 2023 ftmanchuniv https://doi.org/10.1115/1.4063265 2024-05-01T00:07:12Z This paper presents a solution verification and validation study for an overset mesh based numerical wave tank in OpenFOAM, which considers the coupling between a free-surface hydrodynamic flow model, a rigid body motion model and an overset mesh. The coupling between the rigid body motion solver and the free surface flow solver was achieved in a segregated manner. Free decay of roll motion of a barge was modelled using the numerical wave tank, and the damping coefficient was selected as the target quantity for solution verification. The least square based solution verification procedure was adopted, where one of the four types of error estimators was fit to the data in the least square sense. Both structured and unstructured mesh were tested, and their effects on the convergence order, numerical uncertainty and error were carefully investigated. From the numerical tests, it is found that the numerical wave tank exhibits a very good convergence property for the floating body problems with structured mesh, i.e. nearly second order in space and first order in time. However, when switching the body-fitted mesh to unstructured mesh, the grid convergence is reduced to first order. Unstructured mesh does not significantly affect the convergence order in time domain, but results in a larger uncertainty due to data scattering. Article in Journal/Newspaper Arctic eSpace - Manchester Metropolitan University's Research Repository Journal of Offshore Mechanics and Arctic Engineering 146 3 |
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Open Polar |
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eSpace - Manchester Metropolitan University's Research Repository |
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ftmanchuniv |
language |
English |
description |
This paper presents a solution verification and validation study for an overset mesh based numerical wave tank in OpenFOAM, which considers the coupling between a free-surface hydrodynamic flow model, a rigid body motion model and an overset mesh. The coupling between the rigid body motion solver and the free surface flow solver was achieved in a segregated manner. Free decay of roll motion of a barge was modelled using the numerical wave tank, and the damping coefficient was selected as the target quantity for solution verification. The least square based solution verification procedure was adopted, where one of the four types of error estimators was fit to the data in the least square sense. Both structured and unstructured mesh were tested, and their effects on the convergence order, numerical uncertainty and error were carefully investigated. From the numerical tests, it is found that the numerical wave tank exhibits a very good convergence property for the floating body problems with structured mesh, i.e. nearly second order in space and first order in time. However, when switching the body-fitted mesh to unstructured mesh, the grid convergence is reduced to first order. Unstructured mesh does not significantly affect the convergence order in time domain, but results in a larger uncertainty due to data scattering. |
format |
Article in Journal/Newspaper |
author |
Chen, Hao Qian, Ling Cao, Deping |
spellingShingle |
Chen, Hao Qian, Ling Cao, Deping Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM |
author_facet |
Chen, Hao Qian, Ling Cao, Deping |
author_sort |
Chen, Hao |
title |
Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM |
title_short |
Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM |
title_full |
Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM |
title_fullStr |
Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM |
title_full_unstemmed |
Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM |
title_sort |
analysis of convergence behaviour for the overset mesh based numerical wave tank in openfoam |
publisher |
American Society of Mechanical Engineers |
publishDate |
2023 |
url |
https://e-space.mmu.ac.uk/631826/1/OMAE2023_HaoChen.pdf |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
https://e-space.mmu.ac.uk/631826/ https://doi.org/10.1115/1.4063265 10.1115/1.4063265 https://e-space.mmu.ac.uk/631826/1/OMAE2023_HaoChen.pdf Chen, Hao </view/creators/Chen=3AHao=3A=3A.html>, Qian, Ling </view/creators/Qian=3ALing=3A=3A.html> ORCID logoorcid:0000-0002-9716-2342 and Cao, Deping </view/creators/Cao=3ADeping=3A=3A.html> (2023) Analysis of convergence behaviour for the overset mesh based numerical wave tank in OpenFOAM. Journal of Offshore Mechanics and Arctic Engineering, 146 (3). 031901-031901. ISSN 0892-7219 |
op_rights |
cc_by_4 info:eu-repo/semantics/embargoedAccess |
op_doi |
https://doi.org/10.1115/1.4063265 |
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Journal of Offshore Mechanics and Arctic Engineering |
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146 |
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3 |
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1799471444288077824 |