Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls
Numerical ventilation (NV) is a well-known problem that occurs when the volume of fluid method is used to model vessels with a bow that creates an acute entrance angle with the free surface, as is typical for both planing hulls and yachts. Numerical ventilation may be considered one of the main sour...
Published in: | Journal of Offshore Mechanics and Arctic Engineering |
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ftsouthampton:oai:eprints.soton.ac.uk:473903 2023-12-03T10:14:58+01:00 Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls Gray-Stephens, Angus Tezdogan, Tahsin Day, Alexander J. 2021-06-01 text https://eprints.soton.ac.uk/473903/ https://eprints.soton.ac.uk/473903/1/omae_143_3_031903_accepted_paper.docx https://eprints.soton.ac.uk/473903/2/Gray_Stephens_etal_2021_Appendix_A_for_Minimising_numerical_ventilation_in_CFD_simulations.pdf en English eng https://eprints.soton.ac.uk/473903/1/omae_143_3_031903_accepted_paper.docx https://eprints.soton.ac.uk/473903/2/Gray_Stephens_etal_2021_Appendix_A_for_Minimising_numerical_ventilation_in_CFD_simulations.pdf Gray-Stephens, Angus, Tezdogan, Tahsin and Day, Alexander J. (2021) Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls. Journal of Offshore Mechanics and Arctic Engineering, 143 (3), [031903]. (doi:10.1115/1.4050085 <http://dx.doi.org/10.1115/1.4050085>). cc_by_4 Letter PeerReviewed 2021 ftsouthampton https://doi.org/10.1115/1.4050085 2023-11-03T00:07:05Z Numerical ventilation (NV) is a well-known problem that occurs when the volume of fluid method is used to model vessels with a bow that creates an acute entrance angle with the free surface, as is typical for both planing hulls and yachts. Numerical ventilation may be considered one of the main sources of error in numerical simulations of planning hulls and as such warrants an in-depth analysis. This paper sets out to bring together the available work, as well as performing its own investigation into the problem to develop a better understanding of numerical ventilation and present alternate solutions. Additionally, the success and impact of different approaches are presented in an attempt to help other researchers avoid and correct for numerical ventilation. Interface smearing caused by the simulation being unable to track the free surface is identified as the main source of numerical ventilation. This originates from the interface between the volume mesh and the prism layer mesh. This study investigates this interface, presenting a novel solution to prism layer meshing that was found to minimize numerical ventilation. Through the implementation of a modified high-resolution interface capture (HRIC) scheme and the correct mesh refinements, it is possible to minimize the impact of numerical ventilation to a level that will not affect the results of a simulation and is acceptable for engineering applications. Manuscript Arctic University of Southampton: e-Prints Soton Journal of Offshore Mechanics and Arctic Engineering 143 3 |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
English |
description |
Numerical ventilation (NV) is a well-known problem that occurs when the volume of fluid method is used to model vessels with a bow that creates an acute entrance angle with the free surface, as is typical for both planing hulls and yachts. Numerical ventilation may be considered one of the main sources of error in numerical simulations of planning hulls and as such warrants an in-depth analysis. This paper sets out to bring together the available work, as well as performing its own investigation into the problem to develop a better understanding of numerical ventilation and present alternate solutions. Additionally, the success and impact of different approaches are presented in an attempt to help other researchers avoid and correct for numerical ventilation. Interface smearing caused by the simulation being unable to track the free surface is identified as the main source of numerical ventilation. This originates from the interface between the volume mesh and the prism layer mesh. This study investigates this interface, presenting a novel solution to prism layer meshing that was found to minimize numerical ventilation. Through the implementation of a modified high-resolution interface capture (HRIC) scheme and the correct mesh refinements, it is possible to minimize the impact of numerical ventilation to a level that will not affect the results of a simulation and is acceptable for engineering applications. |
format |
Manuscript |
author |
Gray-Stephens, Angus Tezdogan, Tahsin Day, Alexander J. |
spellingShingle |
Gray-Stephens, Angus Tezdogan, Tahsin Day, Alexander J. Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls |
author_facet |
Gray-Stephens, Angus Tezdogan, Tahsin Day, Alexander J. |
author_sort |
Gray-Stephens, Angus |
title |
Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls |
title_short |
Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls |
title_full |
Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls |
title_fullStr |
Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls |
title_full_unstemmed |
Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls |
title_sort |
minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls |
publishDate |
2021 |
url |
https://eprints.soton.ac.uk/473903/ https://eprints.soton.ac.uk/473903/1/omae_143_3_031903_accepted_paper.docx https://eprints.soton.ac.uk/473903/2/Gray_Stephens_etal_2021_Appendix_A_for_Minimising_numerical_ventilation_in_CFD_simulations.pdf |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
https://eprints.soton.ac.uk/473903/1/omae_143_3_031903_accepted_paper.docx https://eprints.soton.ac.uk/473903/2/Gray_Stephens_etal_2021_Appendix_A_for_Minimising_numerical_ventilation_in_CFD_simulations.pdf Gray-Stephens, Angus, Tezdogan, Tahsin and Day, Alexander J. (2021) Minimizing numerical ventilation in computational fluid dynamics simulations of high-speed planing hulls. Journal of Offshore Mechanics and Arctic Engineering, 143 (3), [031903]. (doi:10.1115/1.4050085 <http://dx.doi.org/10.1115/1.4050085>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1115/1.4050085 |
container_title |
Journal of Offshore Mechanics and Arctic Engineering |
container_volume |
143 |
container_issue |
3 |
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