A numerical analysis of the response and air gap demand for semi-submersibles
This paper examines the effects of viscous damping on the prediction of air gap demand for semi-submersibles. This is illustrated by a case study of a typical six-column, double pontoon semi-submersible in irregular waves. Linear responses of the platform and free-surface elevations at selected loca...
Published in: | Volume 6: Materials Technology; C.C. Mei Symposium on Wave Mechanics and Hydrodynamics; Offshore Measurement and Data Interpretation |
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ftnanyangtu:oai:dr.ntu.edu.sg:10356/99836 2023-05-15T14:26:09+02:00 A numerical analysis of the response and air gap demand for semi-submersibles Kurniawan, Adi Huang, Zhenhua Li, Jing Liu, Chunrong Wang, Xikun Hao, Zhiyong Tan, Soon Keat Nah, Edwin School of Civil and Environmental Engineering International Conference on Ocean, Offshore and Arctic Engineering (28th : 2009 : Honolulu, USA) 2013-06-24T06:26:59Z https://hdl.handle.net/10356/99836 http://hdl.handle.net/10220/10533 https://doi.org/10.1115/OMAE2009-79163 en eng Kurniawan, A., Huang, Z., Li, J., Liu, C., Wang, X., Hao, Z., et al. (2009). A Numerical Analysis of the Response and Air Gap Demand for Semi-Submersibles. ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering, 6, pp.355-363. https://hdl.handle.net/10356/99836 http://hdl.handle.net/10220/10533 doi:10.1115/OMAE2009-79163 © 2009 ASME. DRNTU::Social sciences::Geography::Oceanography Conference Paper 2013 ftnanyangtu https://doi.org/10.1115/OMAE2009-79163 2020-04-17T00:09:46Z This paper examines the effects of viscous damping on the prediction of air gap demand for semi-submersibles. This is illustrated by a case study of a typical six-column, double pontoon semi-submersible in irregular waves. Linear responses of the platform and free-surface elevations at selected locations are computed using WAMIT, in which viscous damping effects are included through the use of a linear damping matrix. The spectra of the platform’s response and of the relative free-surface elevation at the selected locations, as well as the probability distributions of air gap minima obtained using different damping matrices are compared. It is demonstrated that correct modelling of viscous damping is important for an accurate prediction of air gap demand of a floating platform, especially if the peak frequency of the wave spectrum is close to the heave, roll, and pitch natural frequencies of the platform. Conference Object Arctic DR-NTU (Digital Repository at Nanyang Technological University, Singapore) Volume 6: Materials Technology; C.C. Mei Symposium on Wave Mechanics and Hydrodynamics; Offshore Measurement and Data Interpretation 355 363 |
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Open Polar |
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DR-NTU (Digital Repository at Nanyang Technological University, Singapore) |
op_collection_id |
ftnanyangtu |
language |
English |
topic |
DRNTU::Social sciences::Geography::Oceanography |
spellingShingle |
DRNTU::Social sciences::Geography::Oceanography Kurniawan, Adi Huang, Zhenhua Li, Jing Liu, Chunrong Wang, Xikun Hao, Zhiyong Tan, Soon Keat Nah, Edwin A numerical analysis of the response and air gap demand for semi-submersibles |
topic_facet |
DRNTU::Social sciences::Geography::Oceanography |
description |
This paper examines the effects of viscous damping on the prediction of air gap demand for semi-submersibles. This is illustrated by a case study of a typical six-column, double pontoon semi-submersible in irregular waves. Linear responses of the platform and free-surface elevations at selected locations are computed using WAMIT, in which viscous damping effects are included through the use of a linear damping matrix. The spectra of the platform’s response and of the relative free-surface elevation at the selected locations, as well as the probability distributions of air gap minima obtained using different damping matrices are compared. It is demonstrated that correct modelling of viscous damping is important for an accurate prediction of air gap demand of a floating platform, especially if the peak frequency of the wave spectrum is close to the heave, roll, and pitch natural frequencies of the platform. |
author2 |
School of Civil and Environmental Engineering International Conference on Ocean, Offshore and Arctic Engineering (28th : 2009 : Honolulu, USA) |
format |
Conference Object |
author |
Kurniawan, Adi Huang, Zhenhua Li, Jing Liu, Chunrong Wang, Xikun Hao, Zhiyong Tan, Soon Keat Nah, Edwin |
author_facet |
Kurniawan, Adi Huang, Zhenhua Li, Jing Liu, Chunrong Wang, Xikun Hao, Zhiyong Tan, Soon Keat Nah, Edwin |
author_sort |
Kurniawan, Adi |
title |
A numerical analysis of the response and air gap demand for semi-submersibles |
title_short |
A numerical analysis of the response and air gap demand for semi-submersibles |
title_full |
A numerical analysis of the response and air gap demand for semi-submersibles |
title_fullStr |
A numerical analysis of the response and air gap demand for semi-submersibles |
title_full_unstemmed |
A numerical analysis of the response and air gap demand for semi-submersibles |
title_sort |
numerical analysis of the response and air gap demand for semi-submersibles |
publishDate |
2013 |
url |
https://hdl.handle.net/10356/99836 http://hdl.handle.net/10220/10533 https://doi.org/10.1115/OMAE2009-79163 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Kurniawan, A., Huang, Z., Li, J., Liu, C., Wang, X., Hao, Z., et al. (2009). A Numerical Analysis of the Response and Air Gap Demand for Semi-Submersibles. ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering, 6, pp.355-363. https://hdl.handle.net/10356/99836 http://hdl.handle.net/10220/10533 doi:10.1115/OMAE2009-79163 |
op_rights |
© 2009 ASME. |
op_doi |
https://doi.org/10.1115/OMAE2009-79163 |
container_title |
Volume 6: Materials Technology; C.C. Mei Symposium on Wave Mechanics and Hydrodynamics; Offshore Measurement and Data Interpretation |
container_start_page |
355 |
op_container_end_page |
363 |
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1766298633023520768 |