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Heave motion suppression of a Spar with a heave plate

Lookup NU author(s): Professor Longbin Tao

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Abstract

Vortex shedding flow ofan oscillating vertical cylinder with a disk attached at its keel is considered. This configuration is of interest for the offshore oil and gas industry. A finite difference method is employed to solve the incompressible Navier–Stokes equations in the primitive-variables formulation. Test cases were used to guide selection ofthe size of flow domain, numerical parameters, and to verify that the resultant method was both convergent and accurate. Numerical simulations have shown that the geometry configurations of the cylinder and disk, such as aspect ratio ofthe disk td/Dd and diameter ratio, Dd/Dc have significant influence on the vortex shedding modes and associated hydrodynamic properties, e.g. hydrodynamic damping and added mass coefficients. These in turn affect the performance in heave motion control ofthe structures.

Publication metadata

Author(s): Tao L, Cai S

Publication type: Article

Publication status: Published

Journal: Ocean Engineering

Year: 2004

Volume: 31

Issue: 5-6

Pages: 669-692

Print publication date: 01/04/2004

Date deposited: 07/05/2010

ISSN (print): 0029-8018

ISSN (electronic): 1873-5258

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.oceaneng.2003.05.005

DOI: 10.1016/j.oceaneng.2003.05.005

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