Numerical experiments on ice-structure interaction in shallow water
This paper studies the ice-structure interaction process on a wide, inclined, offshore structure in shallow water. In such a process, the ice rubble pile that forms in front of the structure may reach the seabed, or in other words, the rubble pile may ground. A grounded rubble pile is often assumed...
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ftaaltouniv:oai:aaltodoc.aalto.fi:123456789/44471 2023-05-15T15:11:26+02:00 Numerical experiments on ice-structure interaction in shallow water Lemström, Ida Polojärvi, Arttu Tuhkuri, Jukka Department of Mechanical Engineering Aalto-yliopisto Aalto University 2020-08 application/pdf https://aaltodoc.aalto.fi/handle/123456789/44471 https://doi.org/10.1016/j.coldregions.2020.103088 en eng Elsevier Cold Regions Science and Technology Volume 176 Lemström , I , Polojärvi , A & Tuhkuri , J 2020 , ' Numerical experiments on ice-structure interaction in shallow water ' , Cold Regions Science and Technology , vol. 176 , 103088 . https://doi.org/10.1016/j.coldregions.2020.103088 0165-232X PURE UUID: 272798ca-c7ee-4ae8-b0eb-7fd0f5cc76c8 PURE ITEMURL: https://research.aalto.fi/en/publications/272798ca-c7ee-4ae8-b0eb-7fd0f5cc76c8 PURE LINK: http://www.scopus.com/inward/record.url?scp=85084535274&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/43198549/ENG_Lemstro_m_et_al_Numerical_experiments_on_ice_structure_interaction_Cold_Regions_Science_and_Technology.pdf https://aaltodoc.aalto.fi/handle/123456789/44471 URN:NBN:fi:aalto-202006013444 doi:10.1016/j.coldregions.2020.103088 openAccess Arctic technology Finite-discrete element method Force chains Ice encroachment Ice mechanics Ice-structure interaction A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä 2020 ftaaltouniv https://doi.org/10.1016/j.coldregions.2020.103088 2022-12-15T19:20:09Z This paper studies the ice-structure interaction process on a wide, inclined, offshore structure in shallow water. In such a process, the ice rubble pile that forms in front of the structure may reach the seabed, or in other words, the rubble pile may ground. A grounded rubble pile is often assumed to protect the structure from high peak ice loads. The study is based on two-dimensional combined finite-discrete element method simulations and it focuses on the effect of water depth and ice thickness on peak ice load magnitudes. In order to obtain a better understanding of the physical phenomena behind the peak ice load events in shallow water, we analyse the probability of rubble pile grounding, the rubble pile geometries, and the load transmission from the intact ice sheet to the structure through the ice rubble pile. We also discuss the parameter effects and the probability and severity of ice encroachment in shallow and deep water. Our simulations suggest that an interaction process in shallow water may leadto higher peak ice load magnitudes than an interaction process in deep water. This is at least the case when there is no pre-existing, partially consolidated ice rubble pile in front of the structure. We also observed that the ice thickness influences the probability of rubble pile grounding: For a given ice thickness to water depth ratio, thin ice appears to ground with higher probability than thick ice. Peer reviewed Article in Journal/Newspaper Arctic Ice Sheet Aalto University Publication Archive (Aaltodoc) Arctic Cold Regions Science and Technology 176 103088 |
institution |
Open Polar |
collection |
Aalto University Publication Archive (Aaltodoc) |
op_collection_id |
ftaaltouniv |
language |
English |
topic |
Arctic technology Finite-discrete element method Force chains Ice encroachment Ice mechanics Ice-structure interaction |
spellingShingle |
Arctic technology Finite-discrete element method Force chains Ice encroachment Ice mechanics Ice-structure interaction Lemström, Ida Polojärvi, Arttu Tuhkuri, Jukka Numerical experiments on ice-structure interaction in shallow water |
topic_facet |
Arctic technology Finite-discrete element method Force chains Ice encroachment Ice mechanics Ice-structure interaction |
description |
This paper studies the ice-structure interaction process on a wide, inclined, offshore structure in shallow water. In such a process, the ice rubble pile that forms in front of the structure may reach the seabed, or in other words, the rubble pile may ground. A grounded rubble pile is often assumed to protect the structure from high peak ice loads. The study is based on two-dimensional combined finite-discrete element method simulations and it focuses on the effect of water depth and ice thickness on peak ice load magnitudes. In order to obtain a better understanding of the physical phenomena behind the peak ice load events in shallow water, we analyse the probability of rubble pile grounding, the rubble pile geometries, and the load transmission from the intact ice sheet to the structure through the ice rubble pile. We also discuss the parameter effects and the probability and severity of ice encroachment in shallow and deep water. Our simulations suggest that an interaction process in shallow water may leadto higher peak ice load magnitudes than an interaction process in deep water. This is at least the case when there is no pre-existing, partially consolidated ice rubble pile in front of the structure. We also observed that the ice thickness influences the probability of rubble pile grounding: For a given ice thickness to water depth ratio, thin ice appears to ground with higher probability than thick ice. Peer reviewed |
author2 |
Department of Mechanical Engineering Aalto-yliopisto Aalto University |
format |
Article in Journal/Newspaper |
author |
Lemström, Ida Polojärvi, Arttu Tuhkuri, Jukka |
author_facet |
Lemström, Ida Polojärvi, Arttu Tuhkuri, Jukka |
author_sort |
Lemström, Ida |
title |
Numerical experiments on ice-structure interaction in shallow water |
title_short |
Numerical experiments on ice-structure interaction in shallow water |
title_full |
Numerical experiments on ice-structure interaction in shallow water |
title_fullStr |
Numerical experiments on ice-structure interaction in shallow water |
title_full_unstemmed |
Numerical experiments on ice-structure interaction in shallow water |
title_sort |
numerical experiments on ice-structure interaction in shallow water |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://aaltodoc.aalto.fi/handle/123456789/44471 https://doi.org/10.1016/j.coldregions.2020.103088 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice Sheet |
genre_facet |
Arctic Ice Sheet |
op_relation |
Cold Regions Science and Technology Volume 176 Lemström , I , Polojärvi , A & Tuhkuri , J 2020 , ' Numerical experiments on ice-structure interaction in shallow water ' , Cold Regions Science and Technology , vol. 176 , 103088 . https://doi.org/10.1016/j.coldregions.2020.103088 0165-232X PURE UUID: 272798ca-c7ee-4ae8-b0eb-7fd0f5cc76c8 PURE ITEMURL: https://research.aalto.fi/en/publications/272798ca-c7ee-4ae8-b0eb-7fd0f5cc76c8 PURE LINK: http://www.scopus.com/inward/record.url?scp=85084535274&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/43198549/ENG_Lemstro_m_et_al_Numerical_experiments_on_ice_structure_interaction_Cold_Regions_Science_and_Technology.pdf https://aaltodoc.aalto.fi/handle/123456789/44471 URN:NBN:fi:aalto-202006013444 doi:10.1016/j.coldregions.2020.103088 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.coldregions.2020.103088 |
container_title |
Cold Regions Science and Technology |
container_volume |
176 |
container_start_page |
103088 |
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1766342280739815424 |