CFD is increasingly used as an alternative to model tests in the assessment of fluid dynamics aspects of offshore structures. Applications are found both in design and operation.

This paper presents guidelines for applying CFD to the investigation of vortex-induced motions of moored floating structures and to vortex-induced vibration of subsea structures such as rigid jumpers.

A summary of main techniques is provided, along with short-comings and capabilities.

Recommended procedures for quality assurance are also presented. To illustrate the best practices, the paper includes a case study of VIM of a deep draft semi-submersible.

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