The numerical investigation of wave slamming on a polar supply and research vessel
Thesis (MEng) -- Stellenbosch University, 2023. ENGLISH SUMMARY: The SA Agulhas II is a polar supply and research vessel owned by the Department of Forestry, Fisheries and the Environment of South Africa. She facilitates and supports research in the Southern Ocean and Antarctica. The SA Agulhas II w...
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2023
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ftunstellenbosch:oai:scholar.sun.ac.za:10019.1/127074 2023-11-12T04:07:39+01:00 The numerical investigation of wave slamming on a polar supply and research vessel Van der Westhuizen, Alexander Bekker, Anriette Meyer, Christiaan J. Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering. 2023-03-02T12:38:30Z xiv, 105 pages : illustrations, includes annexures application/pdf http://hdl.handle.net/10019.1/127074 en_ZA eng Stellenbosch : Stellenbosch University http://hdl.handle.net/10019.1/127074 Stellenbosch University Computational fluid dynamics Offshore structures -- Hydrodynamics Water waves Ocean waves UCTD Thesis 2023 ftunstellenbosch 2023-10-22T07:24:28Z Thesis (MEng) -- Stellenbosch University, 2023. ENGLISH SUMMARY: The SA Agulhas II is a polar supply and research vessel owned by the Department of Forestry, Fisheries and the Environment of South Africa. She facilitates and supports research in the Southern Ocean and Antarctica. The SA Agulhas II was designed to polar class 5 and experiences harsh seas and ice conditions during her voyages. The ship was designed with a raised transom which results in significant slamming during open water navigation. This can cause local damage to the hull as well as increased fatigue damage to the structure of the vessel. The ship was designed to manage ice passage which may be sub-optimal during open water navigation due to the increased slamming which results from the raised transom. An investigation into a monitoring scheme with the use of full-scale measurements and simulation software is instantiated to detect slamming pressures experienced by the hull of the vessel. The full-scale slam load measurement estimation is established with the use of plate theory and strain measurements on sections of the hull plating at the transom. The strain measurements are used to determine an estimate of the pressure loads experienced on the hull during slamming events. The results show promise in the technique used after some improvements in noise attenuation and error adjustment due to simplifying assumptions. A computational fluid dynamic model and simulation procedure is developed to analyse the validity of using simulation software to predict loading and vessel responses as well as inform hindsight investigations of the vessel responses to her environment. The simulation software does not capture the response of the vessel well in some seaways and hydrodynamic pressure estimates are not determined well for small sea states. AFRIKAANSE OPSOMMING: Die SA Agulhas II is ’n pool verskaffings- en navorsingsvaartuig wat deur die Departement van Bosbou, Visserye en die Omgewing van Suid-Afrika besit word. Sy ondersteun navorsing in die ... Thesis Antarc* Antarctica Southern Ocean Stellenbosch University: SUNScholar Research Repository Southern Ocean |
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Open Polar |
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Stellenbosch University: SUNScholar Research Repository |
op_collection_id |
ftunstellenbosch |
language |
English |
topic |
Computational fluid dynamics Offshore structures -- Hydrodynamics Water waves Ocean waves UCTD |
spellingShingle |
Computational fluid dynamics Offshore structures -- Hydrodynamics Water waves Ocean waves UCTD Van der Westhuizen, Alexander The numerical investigation of wave slamming on a polar supply and research vessel |
topic_facet |
Computational fluid dynamics Offshore structures -- Hydrodynamics Water waves Ocean waves UCTD |
description |
Thesis (MEng) -- Stellenbosch University, 2023. ENGLISH SUMMARY: The SA Agulhas II is a polar supply and research vessel owned by the Department of Forestry, Fisheries and the Environment of South Africa. She facilitates and supports research in the Southern Ocean and Antarctica. The SA Agulhas II was designed to polar class 5 and experiences harsh seas and ice conditions during her voyages. The ship was designed with a raised transom which results in significant slamming during open water navigation. This can cause local damage to the hull as well as increased fatigue damage to the structure of the vessel. The ship was designed to manage ice passage which may be sub-optimal during open water navigation due to the increased slamming which results from the raised transom. An investigation into a monitoring scheme with the use of full-scale measurements and simulation software is instantiated to detect slamming pressures experienced by the hull of the vessel. The full-scale slam load measurement estimation is established with the use of plate theory and strain measurements on sections of the hull plating at the transom. The strain measurements are used to determine an estimate of the pressure loads experienced on the hull during slamming events. The results show promise in the technique used after some improvements in noise attenuation and error adjustment due to simplifying assumptions. A computational fluid dynamic model and simulation procedure is developed to analyse the validity of using simulation software to predict loading and vessel responses as well as inform hindsight investigations of the vessel responses to her environment. The simulation software does not capture the response of the vessel well in some seaways and hydrodynamic pressure estimates are not determined well for small sea states. AFRIKAANSE OPSOMMING: Die SA Agulhas II is ’n pool verskaffings- en navorsingsvaartuig wat deur die Departement van Bosbou, Visserye en die Omgewing van Suid-Afrika besit word. Sy ondersteun navorsing in die ... |
author2 |
Bekker, Anriette Meyer, Christiaan J. Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering. |
format |
Thesis |
author |
Van der Westhuizen, Alexander |
author_facet |
Van der Westhuizen, Alexander |
author_sort |
Van der Westhuizen, Alexander |
title |
The numerical investigation of wave slamming on a polar supply and research vessel |
title_short |
The numerical investigation of wave slamming on a polar supply and research vessel |
title_full |
The numerical investigation of wave slamming on a polar supply and research vessel |
title_fullStr |
The numerical investigation of wave slamming on a polar supply and research vessel |
title_full_unstemmed |
The numerical investigation of wave slamming on a polar supply and research vessel |
title_sort |
numerical investigation of wave slamming on a polar supply and research vessel |
publisher |
Stellenbosch : Stellenbosch University |
publishDate |
2023 |
url |
http://hdl.handle.net/10019.1/127074 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Antarc* Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctica Southern Ocean |
op_relation |
http://hdl.handle.net/10019.1/127074 |
op_rights |
Stellenbosch University |
_version_ |
1782328239050457088 |