Wave load prediction on a stationary bergy bit near a fixed offshore platform
Offshore oil and gas operations conducted in harsh environments such offshore Newfoundland may pose additional risks due to collision of smaller ice pieces and bergy bits with the offshore structures, including their topsides in the case of gravity based structures particularly in extreme waves. In...
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:23002421 2023-05-15T14:24:26+02:00 Wave load prediction on a stationary bergy bit near a fixed offshore platform Seo, Dong Cheol Sayeed, Tanvir Zaman, M. Hasanat Akinturk, Ayhan 2017-06-25 text https://doi.org/10.1115/OMAE2017-62392 https://nrc-publications.canada.ca/eng/view/object/?id=1063ac6d-e73f-420e-8f9a-413830f55fad https://nrc-publications.canada.ca/fra/voir/objet/?id=1063ac6d-e73f-420e-8f9a-413830f55fad eng eng ASME Volume 3A: Structures, Safety and Reliability, ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, 25 June 2017, Trondheim, Norway, ISBN: 978-0-7918-5765-6, Publication date: 2017-06-25, Pages: V03AT02A030– doi:10.1115/OMAE2017-62392 article 2017 ftnrccanada https://doi.org/10.1115/OMAE2017-62392 2021-09-01T06:17:11Z Offshore oil and gas operations conducted in harsh environments such offshore Newfoundland may pose additional risks due to collision of smaller ice pieces and bergy bits with the offshore structures, including their topsides in the case of gravity based structures particularly in extreme waves. In this paper, CFD (Computational Fluid Dynamics) prediction for wave loads acting on a bergy bit around a fixed offshore platform is presented. Often the vertical column of a gravity based structure is designed against ice collisions, if operating in such an environment. In practices, topsides are usually protected by being placed sufficiently high from the still water level, away from the reach of the bergy bits. This vertical clearance between the still water level and the topside deck is known an air gap. Hence, the amount of the air gap planned for such an offshore structure is an important factor for the safety of the topsides at a given location. In this study a CFD method is applied to estimate the dynamic response of the bergy bit and provide a reliable air gap to reduce the potential risk of the bergy bit collision. In advance of more complex collision simulations using a free-floating ice for the airgap design, CFD analysis of wave load prediction on a stationary bergy bit is carried out and reported in this paper. In the experiments and CFD simulations, the location of the bergy bit is changed to quantify the change of wave load due to the hydrodynamic interaction between the bergy bit and the platform. Finally, the results of the CFD simulations are compared with the relevant experiment results to confirm the simulation performance prior to the free floating bergy bit simulations. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Arctic Newfoundland National Research Council Canada: NRC Publications Archive Volume 3A: Structures, Safety and Reliability |
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Open Polar |
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National Research Council Canada: NRC Publications Archive |
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ftnrccanada |
language |
English |
description |
Offshore oil and gas operations conducted in harsh environments such offshore Newfoundland may pose additional risks due to collision of smaller ice pieces and bergy bits with the offshore structures, including their topsides in the case of gravity based structures particularly in extreme waves. In this paper, CFD (Computational Fluid Dynamics) prediction for wave loads acting on a bergy bit around a fixed offshore platform is presented. Often the vertical column of a gravity based structure is designed against ice collisions, if operating in such an environment. In practices, topsides are usually protected by being placed sufficiently high from the still water level, away from the reach of the bergy bits. This vertical clearance between the still water level and the topside deck is known an air gap. Hence, the amount of the air gap planned for such an offshore structure is an important factor for the safety of the topsides at a given location. In this study a CFD method is applied to estimate the dynamic response of the bergy bit and provide a reliable air gap to reduce the potential risk of the bergy bit collision. In advance of more complex collision simulations using a free-floating ice for the airgap design, CFD analysis of wave load prediction on a stationary bergy bit is carried out and reported in this paper. In the experiments and CFD simulations, the location of the bergy bit is changed to quantify the change of wave load due to the hydrodynamic interaction between the bergy bit and the platform. Finally, the results of the CFD simulations are compared with the relevant experiment results to confirm the simulation performance prior to the free floating bergy bit simulations. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Seo, Dong Cheol Sayeed, Tanvir Zaman, M. Hasanat Akinturk, Ayhan |
spellingShingle |
Seo, Dong Cheol Sayeed, Tanvir Zaman, M. Hasanat Akinturk, Ayhan Wave load prediction on a stationary bergy bit near a fixed offshore platform |
author_facet |
Seo, Dong Cheol Sayeed, Tanvir Zaman, M. Hasanat Akinturk, Ayhan |
author_sort |
Seo, Dong Cheol |
title |
Wave load prediction on a stationary bergy bit near a fixed offshore platform |
title_short |
Wave load prediction on a stationary bergy bit near a fixed offshore platform |
title_full |
Wave load prediction on a stationary bergy bit near a fixed offshore platform |
title_fullStr |
Wave load prediction on a stationary bergy bit near a fixed offshore platform |
title_full_unstemmed |
Wave load prediction on a stationary bergy bit near a fixed offshore platform |
title_sort |
wave load prediction on a stationary bergy bit near a fixed offshore platform |
publisher |
ASME |
publishDate |
2017 |
url |
https://doi.org/10.1115/OMAE2017-62392 https://nrc-publications.canada.ca/eng/view/object/?id=1063ac6d-e73f-420e-8f9a-413830f55fad https://nrc-publications.canada.ca/fra/voir/objet/?id=1063ac6d-e73f-420e-8f9a-413830f55fad |
genre |
Arctic Newfoundland |
genre_facet |
Arctic Newfoundland |
op_relation |
Volume 3A: Structures, Safety and Reliability, ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, 25 June 2017, Trondheim, Norway, ISBN: 978-0-7918-5765-6, Publication date: 2017-06-25, Pages: V03AT02A030– doi:10.1115/OMAE2017-62392 |
op_doi |
https://doi.org/10.1115/OMAE2017-62392 |
container_title |
Volume 3A: Structures, Safety and Reliability |
_version_ |
1766296854662742016 |