Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements
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 excita...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/3/905 |
| _version_ | 1811194131701039104 |
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| author | Jie Wu M. K. Reddy Lekkala Muk Chen Ong |
| author_facet | Jie Wu M. K. Reddy Lekkala Muk Chen Ong |
| author_sort | Jie Wu |
| collection | DOAJ |
| description | 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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| format | Article |
| id | doaj.art-faaa7c51ebd84c7084be4ea881874056 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-12T00:20:46Z |
| publishDate | 2020-01-01 |
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| spelling | doaj.art-faaa7c51ebd84c7084be4ea8818740562022-12-22T03:55:44ZengMDPI AGApplied Sciences2076-34172020-01-0110390510.3390/app10030905app10030905Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy ElementsJie Wu0M. K. Reddy Lekkala1Muk Chen Ong2SINTEF Ocean, Trondheim, No-7052 Trondheim, NorwayOcean and Ship Technology Research Group, Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Perak 32610, MalaysiaDepartment of Mechanical and Structural Engineering and Materials Science, University of Stavanger, No-4036 Stavanger, NorwayThis 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.https://www.mdpi.com/2076-3417/10/3/905vortex-induced vibrationflexible riserstaggered buoyancy elementshydrodynamic force coefficients |
| spellingShingle | Jie Wu M. K. Reddy Lekkala Muk Chen Ong Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements Applied Sciences vortex-induced vibration flexible riser staggered buoyancy elements hydrodynamic force coefficients |
| title | Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements |
| title_full | Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements |
| title_fullStr | Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements |
| title_full_unstemmed | Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements |
| title_short | Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements |
| title_sort | numerical investigation of vortex induced vibrations of a flexible riser with staggered buoyancy elements |
| topic | vortex-induced vibration flexible riser staggered buoyancy elements hydrodynamic force coefficients |
| url | https://www.mdpi.com/2076-3417/10/3/905 |
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