Physical modeling of scour around tripod foundation structures for offshore wind energy converters

Publikation: Konferenzbeitrag › Paper › Forschung › Peer-Review

Autoren

  • A. Stahlmann
  • T. Schlurmann

Organisationseinheiten

Forschungs-netzwerk anzeigen

Details

OriginalspracheDeutsch
PublikationsstatusVeröffentlicht - 2010

Abstract

As a step to further develop the share of renewable energies, the first German offshore test site alpha ventus has been installed in the North Sea in 2009 in water depths of 30 m, where experience shall be gained and made available for future offshore wind farms. Regarding converter foundations in deep water, it is well known that in most cases scour phenomena occur around the structures. Due to the complexity of the tripod foundations, significant knowledge gaps in scour progression in general and especially in detail as well as its probable effects on the stability and durability are given. Therefore, investigations on scouring phenomena around complex foundation structures like the tripod are carried out within the research project. The investigation method consists of a unique combination of local scour monitoring as well as physical and numerical modeling, whereas the physical modeling part was carried by means of 1:40 laboratory tests and 1:12 large-scale physical model tests in wave flumes. The results show that scours around the tripod foundation do not only occur directly around the foundation piles, but also in the near-field of the structure. Compared to first in-situ measured scours in the test site, at least a good qualitative agreement of the modeled scour depths and evolutions could be shown.

Schlagwörter

    Large-scale physical modeling, Offshore wind energy, Scour, Tripod, Complex foundation, Deep Water, Foundation piles, In-situ, Knowledge gaps, Laboratory test, Large-scale physical model tests, Local scour, Near-field, North Sea, Off-shore wind energy, Offshore wind energy converters, Offshore wind farms, Physical modeling, Renewable energies, Scour depth, Test site, Tripod foundations, Water depth, Wave flumes, Coastal engineering, Foundations, Wind power, Models

Zitieren

Physical modeling of scour around tripod foundation structures for offshore wind energy converters. / Stahlmann, A.; Schlurmann, T.
2010.

Publikation: Konferenzbeitrag › Paper › Forschung › Peer-Review

Download
@conference{e719f8aa7dc74770be949400ae66afac,
title = "Physical modeling of scour around tripod foundation structures for offshore wind energy converters",
abstract = "As a step to further develop the share of renewable energies, the first German offshore test site alpha ventus has been installed in the North Sea in 2009 in water depths of 30 m, where experience shall be gained and made available for future offshore wind farms. Regarding converter foundations in deep water, it is well known that in most cases scour phenomena occur around the structures. Due to the complexity of the tripod foundations, significant knowledge gaps in scour progression in general and especially in detail as well as its probable effects on the stability and durability are given. Therefore, investigations on scouring phenomena around complex foundation structures like the tripod are carried out within the research project. The investigation method consists of a unique combination of local scour monitoring as well as physical and numerical modeling, whereas the physical modeling part was carried by means of 1:40 laboratory tests and 1:12 large-scale physical model tests in wave flumes. The results show that scours around the tripod foundation do not only occur directly around the foundation piles, but also in the near-field of the structure. Compared to first in-situ measured scours in the test site, at least a good qualitative agreement of the modeled scour depths and evolutions could be shown.",
keywords = "Large-scale physical modeling, Offshore wind energy, Scour, Tripod, Complex foundation, Deep Water, Foundation piles, In-situ, Knowledge gaps, Laboratory test, Large-scale physical model tests, Local scour, Near-field, North Sea, Off-shore wind energy, Offshore wind energy converters, Offshore wind farms, Physical modeling, Renewable energies, Scour depth, Test site, Tripod foundations, Water depth, Wave flumes, Coastal engineering, Foundations, Wind power, Models",
author = "A. Stahlmann and T. Schlurmann",
note = "Cited By :11 Export Date: 1 February 2021",
year = "2010",
language = "Deutsch",

}

Download

TY - CONF

T1 - Physical modeling of scour around tripod foundation structures for offshore wind energy converters

AU - Stahlmann, A.

AU - Schlurmann, T.

N1 - Cited By :11 Export Date: 1 February 2021

PY - 2010

Y1 - 2010

N2 - As a step to further develop the share of renewable energies, the first German offshore test site alpha ventus has been installed in the North Sea in 2009 in water depths of 30 m, where experience shall be gained and made available for future offshore wind farms. Regarding converter foundations in deep water, it is well known that in most cases scour phenomena occur around the structures. Due to the complexity of the tripod foundations, significant knowledge gaps in scour progression in general and especially in detail as well as its probable effects on the stability and durability are given. Therefore, investigations on scouring phenomena around complex foundation structures like the tripod are carried out within the research project. The investigation method consists of a unique combination of local scour monitoring as well as physical and numerical modeling, whereas the physical modeling part was carried by means of 1:40 laboratory tests and 1:12 large-scale physical model tests in wave flumes. The results show that scours around the tripod foundation do not only occur directly around the foundation piles, but also in the near-field of the structure. Compared to first in-situ measured scours in the test site, at least a good qualitative agreement of the modeled scour depths and evolutions could be shown.

AB - As a step to further develop the share of renewable energies, the first German offshore test site alpha ventus has been installed in the North Sea in 2009 in water depths of 30 m, where experience shall be gained and made available for future offshore wind farms. Regarding converter foundations in deep water, it is well known that in most cases scour phenomena occur around the structures. Due to the complexity of the tripod foundations, significant knowledge gaps in scour progression in general and especially in detail as well as its probable effects on the stability and durability are given. Therefore, investigations on scouring phenomena around complex foundation structures like the tripod are carried out within the research project. The investigation method consists of a unique combination of local scour monitoring as well as physical and numerical modeling, whereas the physical modeling part was carried by means of 1:40 laboratory tests and 1:12 large-scale physical model tests in wave flumes. The results show that scours around the tripod foundation do not only occur directly around the foundation piles, but also in the near-field of the structure. Compared to first in-situ measured scours in the test site, at least a good qualitative agreement of the modeled scour depths and evolutions could be shown.

KW - Large-scale physical modeling

KW - Offshore wind energy

KW - Scour

KW - Tripod

KW - Complex foundation

KW - Deep Water

KW - Foundation piles

KW - In-situ

KW - Knowledge gaps

KW - Laboratory test

KW - Large-scale physical model tests

KW - Local scour

KW - Near-field

KW - North Sea

KW - Off-shore wind energy

KW - Offshore wind energy converters

KW - Offshore wind farms

KW - Physical modeling

KW - Renewable energies

KW - Scour depth

KW - Test site

KW - Tripod foundations

KW - Water depth

KW - Wave flumes

KW - Coastal engineering

KW - Foundations

KW - Wind power

KW - Models

M3 - Paper

ER -