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; P. H. 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, P. H. 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

^*Corresponding author for this work

Research output: Contribution to journal › Conference proceedings published in a journal › peer-review

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
Pages (from-to)	379-387
Number of pages	9
Journal	Energy Procedia
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, EERA DeepWind, 2016 - Trondheim, Norway Duration: 20 Jan 2016 → 22 Jan 2016

ASJC Scopus subject areas

General Energy

Keywords

Extreme waves
Hydrodynamic loads
Numerical modelling
Offshore wind turbines
Physical model tests

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.egypro.2016.09.197

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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. H., Adcock, T. A. A., Obhrai, C., ... Hanson, T. D. (2016). DeRisk - Accurate Prediction of ULS Wave Loads. Outlook and First Results. Energy Procedia, 94, 379-387. https://doi.org/10.1016/j.egypro.2016.09.197

@article{9f1339f8ec7946aca56908f5f737e06a,

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 Taylor, {P. H.} 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.}",

note = "Publisher Copyright: {\textcopyright} 2016 The Authors.; 13th Deep Sea Offshore Wind R and D Conference, EERA DeepWind, 2016 ; Conference date: 20-01-2016 Through 22-01-2016",

year = "2016",

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

language = "English",

volume = "94",

pages = "379--387",

journal = "Energy Procedia",

issn = "1876-6102",

publisher = "Elsevier Ltd.",

}

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, PH, 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', Energy Procedia, vol. 94, pp. 379-387. https://doi.org/10.1016/j.egypro.2016.09.197

TY - JOUR

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, P. H.

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 proceedings published in a journal

AN - SCOPUS:84998694341

SN - 1876-6102

VL - 94

SP - 379

EP - 387

JO - Energy Procedia

JF - Energy Procedia

T2 - 13th Deep Sea Offshore Wind R and D Conference, EERA DeepWind, 2016

Y2 - 20 January 2016 through 22 January 2016

ER -

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

Abstract

ASJC Scopus subject areas

Keywords

UN SDGs

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