Validation and development of improved methods for the calculation of wave loads on XXL monopiles
Paper OMAE2018-77232, 11 S. With the offshore wind industry aiming to deploy deeper water sites (> 30 m) while still utilizing monopiles, support structures with larger diameters are required. For the design and assessment of so-called XXL monopiles, wave-induced forces, which become more dominan...
Published in: | Volume 1: Offshore Technology |
---|---|
Main Authors: | , |
Format: | Conference Object |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://publica.fraunhofer.de/handle/publica/402737 https://doi.org/10.1115/OMAE2018-77232 |
id |
ftfrauneprints:oai:publica.fraunhofer.de:publica/402737 |
---|---|
record_format |
openpolar |
spelling |
ftfrauneprints:oai:publica.fraunhofer.de:publica/402737 2024-05-12T07:57:04+00:00 Validation and development of improved methods for the calculation of wave loads on XXL monopiles Leimeister, Mareike Dose, Bastian 2018 https://publica.fraunhofer.de/handle/publica/402737 https://doi.org/10.1115/OMAE2018-77232 en eng International Conference on Ocean, Offshore and Arctic Engineering (OMAE) 2018 37th International Conference on Ocean, Offshore and Arctic Engineering 2018. Vol.1: Offshore Technology TANDEM 0325841 doi:10.1115/OMAE2018-77232 https://publica.fraunhofer.de/handle/publica/402737 conference paper 2018 ftfrauneprints https://doi.org/10.1115/OMAE2018-77232 2024-04-17T14:09:26Z Paper OMAE2018-77232, 11 S. With the offshore wind industry aiming to deploy deeper water sites (> 30 m) while still utilizing monopiles, support structures with larger diameters are required. For the design and assessment of so-called XXL monopiles, wave-induced forces, which become more dominant with increasing diameter, have to be determined accurately. Thus, this study focuses on the identification of differences between state-of-the-art theories for wave load calculations with engineering models and the forces exerted on large monopiles from high-precision numerical reference methods. Within the framework of the research project TANDEM (Towards an Advanced Design of Large Monopiles) a 7 m diameter monopile is designed to support Fraunhofer's IWT-7.5-164. This offshore wind turbine system is used as reference to determine wave-induced loads based on the MacCamy-Fuchs approach, implemented in models in Modelica. Different waves, defined in a simulation matrix, are investigated to elaborate the significance of diffraction effects, as well as the relevance of non-linear effects. The results are compared to CFD (Computational Fluid Dynamics) simulations. Deviations in the wave-induced forces are analyzed, taking into account the different capabilities of the applied tools, trends in the applicability of the engineering model are elaborated, and suggestions for improvement of the code based on state-of-the-art theories are given. Conference Object Arctic Publikationsdatenbank der Fraunhofer-Gesellschaft Fuchs ENVELOPE(-68.666,-68.666,-67.233,-67.233) Volume 1: Offshore Technology |
institution |
Open Polar |
collection |
Publikationsdatenbank der Fraunhofer-Gesellschaft |
op_collection_id |
ftfrauneprints |
language |
English |
description |
Paper OMAE2018-77232, 11 S. With the offshore wind industry aiming to deploy deeper water sites (> 30 m) while still utilizing monopiles, support structures with larger diameters are required. For the design and assessment of so-called XXL monopiles, wave-induced forces, which become more dominant with increasing diameter, have to be determined accurately. Thus, this study focuses on the identification of differences between state-of-the-art theories for wave load calculations with engineering models and the forces exerted on large monopiles from high-precision numerical reference methods. Within the framework of the research project TANDEM (Towards an Advanced Design of Large Monopiles) a 7 m diameter monopile is designed to support Fraunhofer's IWT-7.5-164. This offshore wind turbine system is used as reference to determine wave-induced loads based on the MacCamy-Fuchs approach, implemented in models in Modelica. Different waves, defined in a simulation matrix, are investigated to elaborate the significance of diffraction effects, as well as the relevance of non-linear effects. The results are compared to CFD (Computational Fluid Dynamics) simulations. Deviations in the wave-induced forces are analyzed, taking into account the different capabilities of the applied tools, trends in the applicability of the engineering model are elaborated, and suggestions for improvement of the code based on state-of-the-art theories are given. |
format |
Conference Object |
author |
Leimeister, Mareike Dose, Bastian |
spellingShingle |
Leimeister, Mareike Dose, Bastian Validation and development of improved methods for the calculation of wave loads on XXL monopiles |
author_facet |
Leimeister, Mareike Dose, Bastian |
author_sort |
Leimeister, Mareike |
title |
Validation and development of improved methods for the calculation of wave loads on XXL monopiles |
title_short |
Validation and development of improved methods for the calculation of wave loads on XXL monopiles |
title_full |
Validation and development of improved methods for the calculation of wave loads on XXL monopiles |
title_fullStr |
Validation and development of improved methods for the calculation of wave loads on XXL monopiles |
title_full_unstemmed |
Validation and development of improved methods for the calculation of wave loads on XXL monopiles |
title_sort |
validation and development of improved methods for the calculation of wave loads on xxl monopiles |
publishDate |
2018 |
url |
https://publica.fraunhofer.de/handle/publica/402737 https://doi.org/10.1115/OMAE2018-77232 |
long_lat |
ENVELOPE(-68.666,-68.666,-67.233,-67.233) |
geographic |
Fuchs |
geographic_facet |
Fuchs |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
International Conference on Ocean, Offshore and Arctic Engineering (OMAE) 2018 37th International Conference on Ocean, Offshore and Arctic Engineering 2018. Vol.1: Offshore Technology TANDEM 0325841 doi:10.1115/OMAE2018-77232 https://publica.fraunhofer.de/handle/publica/402737 |
op_doi |
https://doi.org/10.1115/OMAE2018-77232 |
container_title |
Volume 1: Offshore Technology |
_version_ |
1798837473801928704 |