DeRisk - Accurate Prediction of ULS Wave Loads. Outlook and First Results

H. Bredmose; M. Dixen; A. Ghadirian; T. J. Larsen; S. Schløer; S. J. Andersen; S. Wang; H. B. Bingham; O. Lindberg; E. D. Christensen; M. H. Vested; S. Carstensen; A. P. Engsig-Karup; O. S. Petersen; H. F. Hansen; J. S. Mariegaard; Paul Taylor; T. A.A. Adcock; C. Obhrai; O. T. Gudmestad; N. J. Tarp-Johansen; C. P. Meyer; J. R. Krokstad; L. Suja-Thauvin; T. D. Hanson

doi:10.1016/j.egypro.2016.09.197

DeRisk - Accurate Prediction of ULS Wave Loads. Outlook and First Results

H. Bredmose, M. Dixen, A. Ghadirian, T. J. Larsen, S. Schløer, S. J. Andersen, S. Wang, H. B. Bingham, O. Lindberg, E. D. Christensen, M. H. Vested, S. Carstensen, A. P. Engsig-Karup, O. S. Petersen, H. F. Hansen, J. S. Mariegaard, Paul Taylor, T. A.A. Adcock, C. Obhrai, O. T. GudmestadN. J. Tarp-Johansen, C. P. Meyer, J. R. Krokstad, L. Suja-Thauvin, T. D. Hanson

Research output: Chapter in Book/Conference paper › Conference paper › peer-review

33 Citations (Scopus)

Abstract

Loads from extreme waves can be dimensioning for the substructures of offshore wind turbines. The DeRisk project (2015-2019) aims at an improved load evaluation procedure for extreme waves through application of advanced wave models, laboratory tests of load effects, development of hydrodynamic load models, aero-elastic response calculations and statistical analysis. This first paper from the project outlines the content and philosophy behind DeRisk. Next, the first results from laboratory tests with irregular waves are presented, including results for 2D and 3D focused wave groups. The results of focused wave group tests and a 6-hour (full scale duration) test are reproduced numerically by re-application of the wave paddle signal in a fully nonlinear potential flow wave model. A good match for the free surface elevation and associated exceedance probability curve is obtained. Finally, the utilization of DeRisk's results in practical design is discussed.

Original language	English
Title of host publication	Energy Procedia
Place of Publication	USA
Publisher	Elsevier
Pages	379-387
Number of pages	9
Volume	94
DOIs	https://doi.org/10.1016/j.egypro.2016.09.197
Publication status	Published - 2016
Externally published	Yes
Event	13th Deep Sea Offshore Wind R and D Conference - Trondheim, Norway Duration: 20 Jan 2016 → 22 Jan 2016

Publication series

Name	Energy Procedia
ISSN (Print)	1876-6102

Conference

Conference	13th Deep Sea Offshore Wind R and D Conference
Abbreviated title	EERA DeepWind
Country/Territory	Norway
City	Trondheim
Period	20/01/16 → 22/01/16

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Bredmose, H., Dixen, M., Ghadirian, A., Larsen, T. J., Schløer, S., Andersen, S. J., Wang, S., Bingham, H. B., Lindberg, O., Christensen, E. D., Vested, M. H., Carstensen, S., Engsig-Karup, A. P., Petersen, O. S., Hansen, H. F., Mariegaard, J. S., Taylor, P., Adcock, T. A. A., Obhrai, C., ... Hanson, T. D. (2016). DeRisk - Accurate Prediction of ULS Wave Loads. Outlook and First Results. In Energy Procedia (Vol. 94, pp. 379-387). (Energy Procedia). Elsevier. https://doi.org/10.1016/j.egypro.2016.09.197

@inproceedings{050b8fbea6f84d3298fef6faebead0f8,

title = "DeRisk - Accurate Prediction of ULS Wave Loads. Outlook and First Results",

abstract = "Loads from extreme waves can be dimensioning for the substructures of offshore wind turbines. The DeRisk project (2015-2019) aims at an improved load evaluation procedure for extreme waves through application of advanced wave models, laboratory tests of load effects, development of hydrodynamic load models, aero-elastic response calculations and statistical analysis. This first paper from the project outlines the content and philosophy behind DeRisk. Next, the first results from laboratory tests with irregular waves are presented, including results for 2D and 3D focused wave groups. The results of focused wave group tests and a 6-hour (full scale duration) test are reproduced numerically by re-application of the wave paddle signal in a fully nonlinear potential flow wave model. A good match for the free surface elevation and associated exceedance probability curve is obtained. Finally, the utilization of DeRisk's results in practical design is discussed.",

keywords = "Extreme waves, Hydrodynamic loads, Numerical modelling, Offshore wind turbines, Physical model tests",

author = "H. Bredmose and M. Dixen and A. Ghadirian and Larsen, {T. J.} and S. Schl{\o}er and Andersen, {S. J.} and S. Wang and Bingham, {H. B.} and O. Lindberg and Christensen, {E. D.} and Vested, {M. H.} and S. Carstensen and Engsig-Karup, {A. P.} and Petersen, {O. S.} and Hansen, {H. F.} and Mariegaard, {J. S.} and Paul Taylor and Adcock, {T. A.A.} and C. Obhrai and Gudmestad, {O. T.} and Tarp-Johansen, {N. J.} and Meyer, {C. P.} and Krokstad, {J. R.} and L. Suja-Thauvin and Hanson, {T. D.}",

year = "2016",

doi = "10.1016/j.egypro.2016.09.197",

language = "English",

volume = "94",

series = "Energy Procedia",

publisher = "Elsevier",

pages = "379--387",

booktitle = "Energy Procedia",

address = "Netherlands",

note = "13th Deep Sea Offshore Wind R and D Conference, EERA DeepWind ; Conference date: 20-01-2016 Through 22-01-2016",

}

Bredmose, H, Dixen, M, Ghadirian, A, Larsen, TJ, Schløer, S, Andersen, SJ, Wang, S, Bingham, HB, Lindberg, O, Christensen, ED, Vested, MH, Carstensen, S, Engsig-Karup, AP, Petersen, OS, Hansen, HF, Mariegaard, JS, Taylor, P, Adcock, TAA, Obhrai, C, Gudmestad, OT, Tarp-Johansen, NJ, Meyer, CP, Krokstad, JR, Suja-Thauvin, L & Hanson, TD 2016, DeRisk - Accurate Prediction of ULS Wave Loads. Outlook and First Results. in Energy Procedia. vol. 94, Energy Procedia, Elsevier, USA, pp. 379-387, 13th Deep Sea Offshore Wind R and D Conference, Trondheim, Norway, 20/01/16. https://doi.org/10.1016/j.egypro.2016.09.197

TY - GEN

T1 - DeRisk - Accurate Prediction of ULS Wave Loads. Outlook and First Results

AU - Bredmose, H.

AU - Dixen, M.

AU - Ghadirian, A.

AU - Larsen, T. J.

AU - Schløer, S.

AU - Andersen, S. J.

AU - Wang, S.

AU - Bingham, H. B.

AU - Lindberg, O.

AU - Christensen, E. D.

AU - Vested, M. H.

AU - Carstensen, S.

AU - Engsig-Karup, A. P.

AU - Petersen, O. S.

AU - Hansen, H. F.

AU - Mariegaard, J. S.

AU - Taylor, Paul

AU - Adcock, T. A.A.

AU - Obhrai, C.

AU - Gudmestad, O. T.

AU - Tarp-Johansen, N. J.

AU - Meyer, C. P.

AU - Krokstad, J. R.

AU - Suja-Thauvin, L.

AU - Hanson, T. D.

PY - 2016

Y1 - 2016

N2 - Loads from extreme waves can be dimensioning for the substructures of offshore wind turbines. The DeRisk project (2015-2019) aims at an improved load evaluation procedure for extreme waves through application of advanced wave models, laboratory tests of load effects, development of hydrodynamic load models, aero-elastic response calculations and statistical analysis. This first paper from the project outlines the content and philosophy behind DeRisk. Next, the first results from laboratory tests with irregular waves are presented, including results for 2D and 3D focused wave groups. The results of focused wave group tests and a 6-hour (full scale duration) test are reproduced numerically by re-application of the wave paddle signal in a fully nonlinear potential flow wave model. A good match for the free surface elevation and associated exceedance probability curve is obtained. Finally, the utilization of DeRisk's results in practical design is discussed.

AB - Loads from extreme waves can be dimensioning for the substructures of offshore wind turbines. The DeRisk project (2015-2019) aims at an improved load evaluation procedure for extreme waves through application of advanced wave models, laboratory tests of load effects, development of hydrodynamic load models, aero-elastic response calculations and statistical analysis. This first paper from the project outlines the content and philosophy behind DeRisk. Next, the first results from laboratory tests with irregular waves are presented, including results for 2D and 3D focused wave groups. The results of focused wave group tests and a 6-hour (full scale duration) test are reproduced numerically by re-application of the wave paddle signal in a fully nonlinear potential flow wave model. A good match for the free surface elevation and associated exceedance probability curve is obtained. Finally, the utilization of DeRisk's results in practical design is discussed.

KW - Extreme waves

KW - Hydrodynamic loads

KW - Numerical modelling

KW - Offshore wind turbines

KW - Physical model tests

UR - http://www.scopus.com/inward/record.url?scp=84998694341&partnerID=8YFLogxK

U2 - 10.1016/j.egypro.2016.09.197

DO - 10.1016/j.egypro.2016.09.197

M3 - Conference paper

AN - SCOPUS:84998694341

VL - 94

T3 - Energy Procedia

SP - 379

EP - 387

BT - Energy Procedia

PB - Elsevier

CY - USA

T2 - 13th Deep Sea Offshore Wind R and D Conference

Y2 - 20 January 2016 through 22 January 2016

ER -

DeRisk - Accurate Prediction of ULS Wave Loads. Outlook and First Results

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