Offshore Structures Exposed to Large Slamming Wave Loads
PhD thesis in Offshore technology In sloping shallow water regions, waves undergo different nonlinear transformations such as wave shoaling and breaking, due to the nonlinear wave interactions with the seabed. The forces from breaking waves are of concern for offshore structures installed in such re...
Published in: | International Journal of Offshore and Polar Engineering |
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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University of Stavanger, Norway
2017
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Online Access: | http://hdl.handle.net/11250/2473020 |
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University of Stavanger: UiS Brage |
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English |
topic |
offshore teknologi wave breaking slamming forces jacket truss structure monopile numerical model Navier-Stokes slamming coefficient VDP::Teknologi: 500::Marin teknologi: 580::Offshoreteknologi: 581 |
spellingShingle |
offshore teknologi wave breaking slamming forces jacket truss structure monopile numerical model Navier-Stokes slamming coefficient VDP::Teknologi: 500::Marin teknologi: 580::Offshoreteknologi: 581 Jose, Jithin Offshore Structures Exposed to Large Slamming Wave Loads |
topic_facet |
offshore teknologi wave breaking slamming forces jacket truss structure monopile numerical model Navier-Stokes slamming coefficient VDP::Teknologi: 500::Marin teknologi: 580::Offshoreteknologi: 581 |
description |
PhD thesis in Offshore technology In sloping shallow water regions, waves undergo different nonlinear transformations such as wave shoaling and breaking, due to the nonlinear wave interactions with the seabed. The forces from breaking waves are of concern for offshore structures installed in such regions. The wave breaking forces are large impulsive forces acting for short period of time. The substructures of offshore wind turbines are usually monopile, gravity-based, tripod and jacket????type structures. Due to the simplicity in the design and installation, monopile structures are widely used for supporting offshore wind turbines. However, the operating water depths and turbine capacity of monopile substructures are limited. With the increase in the turbine capacity and use in larger water depths, the offshore wind industry has recently focused on rigid types of substructures, such as jacket????type structures. In order to estimate the slamming forces due to wave breaking on offshore structures, many research studies have been conducted in the past. However, most of these studies were limited to simple structures such as monopiles. The empirical force models by Goda et al. [5] and Wienke and Oumeraci [7] are widely used in the industry to estimate the breaking wave forces on monopile structures. However, in the case of the jacket structures there have not been much research. Due to the complexity of jacket structures, it is more difficult to analyse the wave forces on a jacket compared to a monopile. The empirical force models developed for approximating the slamming forces on monopiles cannot be easily transferred to jacket structures due to the different member sizes and orientations. Moreover, the uncertainties in these empirical models need to be addressed while using them for jacket structures. In order to study breaking wave interactions with a jacket structure, high quality experimental data is required. Within the WaveSlam experiment ([4, 11]) carried out in a joint collaboration with the University of ... |
author2 |
Gudmestad, Ove Tobias Obhrai, Charlotte |
format |
Doctoral or Postdoctoral Thesis |
author |
Jose, Jithin |
author_facet |
Jose, Jithin |
author_sort |
Jose, Jithin |
title |
Offshore Structures Exposed to Large Slamming Wave Loads |
title_short |
Offshore Structures Exposed to Large Slamming Wave Loads |
title_full |
Offshore Structures Exposed to Large Slamming Wave Loads |
title_fullStr |
Offshore Structures Exposed to Large Slamming Wave Loads |
title_full_unstemmed |
Offshore Structures Exposed to Large Slamming Wave Loads |
title_sort |
offshore structures exposed to large slamming wave loads |
publisher |
University of Stavanger, Norway |
publishDate |
2017 |
url |
http://hdl.handle.net/11250/2473020 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
PhD thesis UiS; ;373 Paper 1: Jose, J., Podrazka, O., Obhrai, C., Gudmestad, O.T., and Cieslikiewicz, W., 2016, “Methods for Analysing Wave Slamming Loads on Truss Structures used in Offshore Wind Applications based on Experimental Data,” International Journal of Offshore and Polar Engineering, Vol. 26(2), pp. 100-108. DOI: dx.doi.org/10.17736/ijope.2016.mkr05 [Not in Brage] Paper 2: Jose, J., Podrazka, O., Gudmestad, O.T., and Cieslikiewicz, W., 2017, “Characteristics of the Wave Slamming Forces on Jacket Structures under Plunging Breaking Waves based on Experimental Data,” In the Proceedings of ASME 36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2017), Trondheim, Norway, June 25-June 30. DOI:10.1115/OMAE2017-61789 [Not available in Brage] Paper 3: Jose, J., Podrazka, O., Gudmestad, O.T., and Cieslikiewicz, W., 2017, “Detailed Study on Breaking Wave Interactions with a Jacket Structure based on Experimental Investigations,” Journal of Offshore Mechanics and Arctic Engineering, Vol. 140(2), pp. 021301.1-021301.14. DOI: dx.doi.org/10.1115/1.4037829 [Not in Brage] Paper 4: Jose, J., Choi, S.J., Giljarhus, K.E.T., and Gudmestad, O. T., 2017, “A Comparison of Numerical Simulations of Breaking Wave Forces on a Monopile Structure using Two Different Numerical Models based on Finite Difference and Finite Volume Methods,” Ocean Engineering, Vol. 137, 78-88. DOI: doi.org/10.1016/j.oceaneng.2017.03.045 Paper 5: Jose, J., Choi, S.J., and Gudmestad, O.T., 2017, “Sensitivity Study on a 3D Numerical Model for Estimating Breaking Wave Forces on a Jacket Structure,” In the Proceedings of 27th International Ocean and Polar Engineering Conference (ISOPE2017), San Francisco, California, June 25- June 30. ISBN: 978-1-880653-97-5. [Not available in Brage] Paper 6: Jose, J., Choi, S.J., Lee, K.H., and Gudmestad, O.T., 2016, “Breaking Wave Forces on an Offshore Wind Turbine Foundation (Jacket Type) in the Shallow Water,” In the Proceedings of 26th International Ocean and Polar Engineering Conference, Rhodes, Greece, June 26-July 2. ISBN: 978-1-880653-88-3. [Not available in Brage] Paper 7: Jose, J., and Choi, S.J., 2017, “Estimation of Slamming Coefficients on Local Members of Offshore Wind Turbine Foundation (Jacket Type) under Plunging Breaker,” International Journal of Naval Architecture and Ocean Engineering, Vol. 9(6), pp. 624-640. DOI: dx.doi.org/10.1016/j.ijnaoe.2017.03.006. Offshore Structures Exposed to Large Slamming Wave Loads by Jithin Jose, Stavanger : University of Stavanger, 2017 (PhD thesis UiS, no. 373) urn:isbn:978-82-7644-746-0 urn:issn:1890-1387 http://hdl.handle.net/11250/2473020 |
op_rights |
Copyright the author, all right reserved ©2017 Jithin Jose |
op_doi |
https://doi.org/10.17736/ijope.2016.mkr0510.1115/OMAE2017-6178910.1115/1.403782910.1016/j.oceaneng.2017.03.04510.1016/j.ijnaoe.2017.03.006 |
container_title |
International Journal of Offshore and Polar Engineering |
container_volume |
26 |
container_issue |
2 |
container_start_page |
100 |
op_container_end_page |
108 |
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ftunivstavanger:oai:uis.brage.unit.no:11250/2473020 2023-06-11T04:07:52+02:00 Offshore Structures Exposed to Large Slamming Wave Loads Jose, Jithin Gudmestad, Ove Tobias Obhrai, Charlotte 2017-12 application/pdf http://hdl.handle.net/11250/2473020 eng eng University of Stavanger, Norway PhD thesis UiS; ;373 Paper 1: Jose, J., Podrazka, O., Obhrai, C., Gudmestad, O.T., and Cieslikiewicz, W., 2016, “Methods for Analysing Wave Slamming Loads on Truss Structures used in Offshore Wind Applications based on Experimental Data,” International Journal of Offshore and Polar Engineering, Vol. 26(2), pp. 100-108. DOI: dx.doi.org/10.17736/ijope.2016.mkr05 [Not in Brage] Paper 2: Jose, J., Podrazka, O., Gudmestad, O.T., and Cieslikiewicz, W., 2017, “Characteristics of the Wave Slamming Forces on Jacket Structures under Plunging Breaking Waves based on Experimental Data,” In the Proceedings of ASME 36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2017), Trondheim, Norway, June 25-June 30. DOI:10.1115/OMAE2017-61789 [Not available in Brage] Paper 3: Jose, J., Podrazka, O., Gudmestad, O.T., and Cieslikiewicz, W., 2017, “Detailed Study on Breaking Wave Interactions with a Jacket Structure based on Experimental Investigations,” Journal of Offshore Mechanics and Arctic Engineering, Vol. 140(2), pp. 021301.1-021301.14. DOI: dx.doi.org/10.1115/1.4037829 [Not in Brage] Paper 4: Jose, J., Choi, S.J., Giljarhus, K.E.T., and Gudmestad, O. T., 2017, “A Comparison of Numerical Simulations of Breaking Wave Forces on a Monopile Structure using Two Different Numerical Models based on Finite Difference and Finite Volume Methods,” Ocean Engineering, Vol. 137, 78-88. DOI: doi.org/10.1016/j.oceaneng.2017.03.045 Paper 5: Jose, J., Choi, S.J., and Gudmestad, O.T., 2017, “Sensitivity Study on a 3D Numerical Model for Estimating Breaking Wave Forces on a Jacket Structure,” In the Proceedings of 27th International Ocean and Polar Engineering Conference (ISOPE2017), San Francisco, California, June 25- June 30. ISBN: 978-1-880653-97-5. [Not available in Brage] Paper 6: Jose, J., Choi, S.J., Lee, K.H., and Gudmestad, O.T., 2016, “Breaking Wave Forces on an Offshore Wind Turbine Foundation (Jacket Type) in the Shallow Water,” In the Proceedings of 26th International Ocean and Polar Engineering Conference, Rhodes, Greece, June 26-July 2. ISBN: 978-1-880653-88-3. [Not available in Brage] Paper 7: Jose, J., and Choi, S.J., 2017, “Estimation of Slamming Coefficients on Local Members of Offshore Wind Turbine Foundation (Jacket Type) under Plunging Breaker,” International Journal of Naval Architecture and Ocean Engineering, Vol. 9(6), pp. 624-640. DOI: dx.doi.org/10.1016/j.ijnaoe.2017.03.006. Offshore Structures Exposed to Large Slamming Wave Loads by Jithin Jose, Stavanger : University of Stavanger, 2017 (PhD thesis UiS, no. 373) urn:isbn:978-82-7644-746-0 urn:issn:1890-1387 http://hdl.handle.net/11250/2473020 Copyright the author, all right reserved ©2017 Jithin Jose offshore teknologi wave breaking slamming forces jacket truss structure monopile numerical model Navier-Stokes slamming coefficient VDP::Teknologi: 500::Marin teknologi: 580::Offshoreteknologi: 581 Doctoral thesis 2017 ftunivstavanger https://doi.org/10.17736/ijope.2016.mkr0510.1115/OMAE2017-6178910.1115/1.403782910.1016/j.oceaneng.2017.03.04510.1016/j.ijnaoe.2017.03.006 2023-05-29T16:03:44Z PhD thesis in Offshore technology In sloping shallow water regions, waves undergo different nonlinear transformations such as wave shoaling and breaking, due to the nonlinear wave interactions with the seabed. The forces from breaking waves are of concern for offshore structures installed in such regions. The wave breaking forces are large impulsive forces acting for short period of time. The substructures of offshore wind turbines are usually monopile, gravity-based, tripod and jacket????type structures. Due to the simplicity in the design and installation, monopile structures are widely used for supporting offshore wind turbines. However, the operating water depths and turbine capacity of monopile substructures are limited. With the increase in the turbine capacity and use in larger water depths, the offshore wind industry has recently focused on rigid types of substructures, such as jacket????type structures. In order to estimate the slamming forces due to wave breaking on offshore structures, many research studies have been conducted in the past. However, most of these studies were limited to simple structures such as monopiles. The empirical force models by Goda et al. [5] and Wienke and Oumeraci [7] are widely used in the industry to estimate the breaking wave forces on monopile structures. However, in the case of the jacket structures there have not been much research. Due to the complexity of jacket structures, it is more difficult to analyse the wave forces on a jacket compared to a monopile. The empirical force models developed for approximating the slamming forces on monopiles cannot be easily transferred to jacket structures due to the different member sizes and orientations. Moreover, the uncertainties in these empirical models need to be addressed while using them for jacket structures. In order to study breaking wave interactions with a jacket structure, high quality experimental data is required. Within the WaveSlam experiment ([4, 11]) carried out in a joint collaboration with the University of ... Doctoral or Postdoctoral Thesis Arctic University of Stavanger: UiS Brage International Journal of Offshore and Polar Engineering 26 2 100 108 |