Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements
Source abstract
Abstract
This paper presents a numerical algorithm used together with a Finite-Element based Vortex-Induced Vibration (VIV) prediction software VIVANA to obtain a hydrodynamic force coefficient database based on response measurements of flexible riser VIV model test of staggered buoyancy elements. The excitation coefficient database is parameterized; and the representative parameters are systematically varied in VIVANA simulations until the predicted responses in terms of mode number, response frequency, root-mean-square (RMS) response amplitude, and RMS curvature agree well with the experimental data under same flow and boundary conditions. An optimal set of force coefficient database for both the buoyancy element and the bare riser section is obtained and a significant improvement in VIV prediction by VIVANA is achieved. The obtained hydrodynamic force coefficient database can be also applied to other empirical VIV prediction programs. The sensitivity of using the same database to predict the VIV of different configurations has also been investigated.
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Research context
OpenAlex topics: Fluid Dynamics and Vibration Analysis · Vibration and Dynamic Analysis · Wind and Air Flow Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
SINTEF Ocean, Trondheim, No-7052 Trondheim, Norway
Ocean and Ship Technology Research Group, Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Perak 32610, Malaysia
Department of Mechanical and Structural Engineering and Materials Science, University of Stavanger, No-4036 Stavanger, Norway
References (25)
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