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Application of direct boundary Element method (BEM) in evaluation of wave impact on offshore platforms

Lookup NU author(s): Saeid Kazemi, Professor Atilla Incecik


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Air gap is defined as the instantaneous vertical distance between the top of the sea surface and the lowest deck of an offshore structure. The consequences of exceeding the design air gap in a storm can be quite serious, and can be include: structural damage due to unexpected wave impact, loss of life or equipment damage due to water on deck, or vessel capsize due to loss of vessel stability. Air gap modelling is of concern for both fixed and floating structures, but is particularly challenging in the case of floating structures because of their large volume and the resulting effects of wave diffraction and radiation The main objective of this study is to investigate the phenomenon of wave impact underneath the decks of floating offshore structures using direct Boundary Element Method (BEM) by applying Wagner’s theory as a simple and useful water impact theory. Wagner’s based wave impact method gives conservative estimate for practical use, even if the linearization in this theory is sometimes criticized.

Publication metadata

Author(s): Kazemi S, Incecik A

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 3rd Postgraduate Research Conference

Year of Conference: 2004