Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
789882 | Journal of Fluids and Structures | 2006 | 13 Pages |
Abstract
A systematic methodology is presented to obtain the vortex-induced vibrational modes of a riser, based on data from CFD coupled to a long beam under tension and placed in sheared cross-flow; two profiles were tested: (a) linear, and (b) exponential. The modes we estimate are in fact nonlinear equilibria between the flow-induced excitation forces and the structural dynamics and are characterized by varying amplitude and phase along the span; these are complex modes, mixtures of traveling and standing waves. Simplifying procedures to represent the VIV response in terms of a few clusters of modes have been applied successfully, reducing substantially the data needed to represent the VIV response.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
D. Lucor, H. Mukundan, M.S. Triantafyllou,