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Experimental study of air gap response and wave impact forces of a semi-submersible drilling unit

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


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An experimental study for predicting the air gap and potential deck impact of a floating offshore structure is the main topic of this research. Numerical modeling for air gap prediction is particularly complicated in the case of floating offshore structures because of their large volume, and the resulting effects of wave diffraction and radiation. Therefore, for new floating platforms, the model tests are often performed as part of their design process. This paper summarizes physical model tests conducted on a semi-submersible model, representing a 1-to-100 scale model of a GVA4000 class, "IRAN-ALBORZ", the largest semisubmersible platform in the Caspian Sea, under construction in North of Iran, to evaluate the platform's air gap at different locations of its deck and also measure the impact forces in case of having negative air gap. The model was tested in regular waves in the wave tank of Newcastle University. The paper discusses the experimental setup, test conditions, and the resulting measurements of the air gap and the wave impact forces by using eight wave probes and three load cells located at different points of the lower deck of the platform. Copyright © 2006 by ASME.

Publication metadata

Author(s): Kazemi S, Incecik A

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 25th International Conference on Offshore Mechanics and Arctic Engineering (OMAE)

Year of Conference: 2006

Pages: 65-70

Publisher: ASME Digital Library


DOI: 10.1115/OMAE2006-92083

Library holdings: Search Newcastle University Library for this item

ISBN: 0791837777