Hydrodynamics around a deep-draft semi-submersible with various corner shapes

Liang, Yibo and Tao, Longbin; (2018) Hydrodynamics around a deep-draft semi-submersible with various corner shapes. In: ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. ASME, New York, NY.. ISBN 978-0-7918-5130-2 (https://doi.org/10.1115/OMAE2018-77135)

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Abstract

A numerical study on flow over a stationary deep-draft semi-submersible (DDS) with various corner shapes was carried out to investigate the corner shape effects on the overall hydrodynamics. Three models based on a typical DDS design with different corner shapes were numerically investigated under 45° incidence. The present numerical model has been validated by an experimental test carried out in a circulating water channel. It is demonstrated that, as the corner shape design changed, the hydrodynamic characteristics alter drastically. In addition, the flow patterns were examined to reveal some insights of the fluid physics due to the changing of different corner shape designs. The detailed numerical results from the geometric study will provide a good guidance for future practical designs.

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