Assessment of Vortex-Induced Vibrations on Deepwater Risers by Considering Fluid-Structure Interaction

[+] Author and Article Information
K. Herfjord, S. O. Drange

Norsk Hydro E&P Research Centre, N-5020 Bergen, Norway

T. Kvamsdal

SINTEF Applied Mathematics, N-7034 Trondheim, Norway

J. Offshore Mech. Arct. Eng 121(4), 207-212 (Nov 01, 1999) (6 pages) doi:10.1115/1.2829569 History: Received April 16, 1998; Revised July 09, 1999; Online December 17, 2007


A methodology for computing vortex-induced vibrations (VIV) on risers is presented. It is based on computation of the flow by a CFD program, structural dynamics by a nonlinear structural (CSD) code, and a coupling between them. The CFD computations are performed in 2-D at a number of sections along the riser. The load is imposed on the riser in a strip theory manner. The coupling between the CFD planes takes place through the response of the riser. The local deformation of the riser is taken into account by the CFD program, thus completing a fluid-structure interaction loop each time step. The methodology is validated by comparing results from simulations with results from model tests.

Copyright © 1999 by The American Society of Mechanical Engineers
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