Prototype Reynolds Number VIV Tests on a Full-scale Rigid Riser
Slender offshore structures in deep water subjected to currents may experience vortex-induced vibrations (VIV), which can cause significant fatigue damage. Extensive experimental researches have been conducted to study the VIV in the past several decades. However, most of the experimental works have...
Published in: | Journal of Offshore Mechanics and Arctic Engineering |
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The American Society of Mechanical Engineers (ASME)
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Online Access: | http://hdl.handle.net/11250/2457587 https://doi.org/10.1115/1.4037538 |
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ftsintef:oai:sintef.brage.unit.no:11250/2457587 2023-05-15T14:22:15+02:00 Prototype Reynolds Number VIV Tests on a Full-scale Rigid Riser Yin, Decao Lie, Halvor Baarholm, Rolf Jarle 2017-09 application/pdf http://hdl.handle.net/11250/2457587 https://doi.org/10.1115/1.4037538 eng eng The American Society of Mechanical Engineers (ASME) J. Offshore Mech. Arct. Eng;OMAE-17-1069 Journal of Offshore Mechanics and Arctic Engineering %7C Volume 140 %7C Issue 1 %7C research-article urn:issn:0892-7219 http://hdl.handle.net/11250/2457587 https://doi.org/10.1115/1.4037538 cristin:1488004 Copyright © 2018 by ASME Journal of Offshore Mechanics and Arctic Engineering-Transactions of The Asme Oscillations Reynolds number Surface roughness Risers (Casting) Pipeline risers Vortex-induced vibration Excitation Engineering prototypes Drag (Fluid dynamics) Water Journal article Peer reviewed 2017 ftsintef https://doi.org/10.1115/1.4037538 2021-08-04T12:00:02Z Slender offshore structures in deep water subjected to currents may experience vortex-induced vibrations (VIV), which can cause significant fatigue damage. Extensive experimental researches have been conducted to study the VIV in the past several decades. However, most of the experimental works have small-scale models and relatively low Reynolds number (Re)—“subcritical” or even lower Reynolds number regime. There is a lack of full understanding of the VIV in prototype Re flow regime. Applying the results with low Re to a full-scale riser with prototype Re might have uncertainties due to the scaling effects. In addition, the surface roughness of the riser is also an important parameter, especially in critical Re regime, which is the case for prototype risers. In the present study, two full-scale rigid riser models with different surface roughness ratios were tested in the towing tank of MARINTEK in 2014. Stationary tests, pure crossflow (CF) free oscillation tests, and forced/controlled motion tests were carried out. Several conclusions could be made: The drag coefficient is dependent on the Re number and surface roughness ratio. At critical and supercritical flow regimes, the displacement amplitude ratio is less sensitive to Re than that at lower Re. The displacement amplitude ratio in subcritical flow regime is significantly larger than that in critical and supercritical flow regimes. Two excitation regions for the ‘smooth riser’ and one excitation region for the “rough riser” are identified. acceptedVersion Article in Journal/Newspaper Arctic SINTEF Open (Brage) Journal of Offshore Mechanics and Arctic Engineering 140 1 |
institution |
Open Polar |
collection |
SINTEF Open (Brage) |
op_collection_id |
ftsintef |
language |
English |
topic |
Oscillations Reynolds number Surface roughness Risers (Casting) Pipeline risers Vortex-induced vibration Excitation Engineering prototypes Drag (Fluid dynamics) Water |
spellingShingle |
Oscillations Reynolds number Surface roughness Risers (Casting) Pipeline risers Vortex-induced vibration Excitation Engineering prototypes Drag (Fluid dynamics) Water Yin, Decao Lie, Halvor Baarholm, Rolf Jarle Prototype Reynolds Number VIV Tests on a Full-scale Rigid Riser |
topic_facet |
Oscillations Reynolds number Surface roughness Risers (Casting) Pipeline risers Vortex-induced vibration Excitation Engineering prototypes Drag (Fluid dynamics) Water |
description |
Slender offshore structures in deep water subjected to currents may experience vortex-induced vibrations (VIV), which can cause significant fatigue damage. Extensive experimental researches have been conducted to study the VIV in the past several decades. However, most of the experimental works have small-scale models and relatively low Reynolds number (Re)—“subcritical” or even lower Reynolds number regime. There is a lack of full understanding of the VIV in prototype Re flow regime. Applying the results with low Re to a full-scale riser with prototype Re might have uncertainties due to the scaling effects. In addition, the surface roughness of the riser is also an important parameter, especially in critical Re regime, which is the case for prototype risers. In the present study, two full-scale rigid riser models with different surface roughness ratios were tested in the towing tank of MARINTEK in 2014. Stationary tests, pure crossflow (CF) free oscillation tests, and forced/controlled motion tests were carried out. Several conclusions could be made: The drag coefficient is dependent on the Re number and surface roughness ratio. At critical and supercritical flow regimes, the displacement amplitude ratio is less sensitive to Re than that at lower Re. The displacement amplitude ratio in subcritical flow regime is significantly larger than that in critical and supercritical flow regimes. Two excitation regions for the ‘smooth riser’ and one excitation region for the “rough riser” are identified. acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Yin, Decao Lie, Halvor Baarholm, Rolf Jarle |
author_facet |
Yin, Decao Lie, Halvor Baarholm, Rolf Jarle |
author_sort |
Yin, Decao |
title |
Prototype Reynolds Number VIV Tests on a Full-scale Rigid Riser |
title_short |
Prototype Reynolds Number VIV Tests on a Full-scale Rigid Riser |
title_full |
Prototype Reynolds Number VIV Tests on a Full-scale Rigid Riser |
title_fullStr |
Prototype Reynolds Number VIV Tests on a Full-scale Rigid Riser |
title_full_unstemmed |
Prototype Reynolds Number VIV Tests on a Full-scale Rigid Riser |
title_sort |
prototype reynolds number viv tests on a full-scale rigid riser |
publisher |
The American Society of Mechanical Engineers (ASME) |
publishDate |
2017 |
url |
http://hdl.handle.net/11250/2457587 https://doi.org/10.1115/1.4037538 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Offshore Mechanics and Arctic Engineering-Transactions of The Asme |
op_relation |
J. Offshore Mech. Arct. Eng;OMAE-17-1069 Journal of Offshore Mechanics and Arctic Engineering %7C Volume 140 %7C Issue 1 %7C research-article urn:issn:0892-7219 http://hdl.handle.net/11250/2457587 https://doi.org/10.1115/1.4037538 cristin:1488004 |
op_rights |
Copyright © 2018 by ASME |
op_doi |
https://doi.org/10.1115/1.4037538 |
container_title |
Journal of Offshore Mechanics and Arctic Engineering |
container_volume |
140 |
container_issue |
1 |
_version_ |
1766294896230006784 |