Numerical Investigation on the Motion Dynamics of Submerged Gravity Anchors Exposed to Wave Action

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Vinay Kumar Vanjakula
  • Christian Windt
  • Frank Adam
  • Nils Goseberg

Research Organisations

External Research Organisations

  • GICON - Großmann Ingenieur Consult GmbH
  • Technische Universität Braunschweig
View graph of relations

Details

Original languageEnglish
Article number04024023
Number of pages19
JournalJournal of Waterway, Port, Coastal and Ocean Engineering
Volume151
Issue number1
Early online date25 Oct 2024
Publication statusPublished - 2025

Abstract

This paper presents a numerical modeling approach to analyze the dynamic response of gravity anchors subjected to waves at various submergence depths. The aim is to model stages of lowering during the installation process of offshore wind energy installations. The study includes an investigation of the effect of different outer shapes of the gravity anchor to understand the influence on the dynamic response of the anchor. The results demonstrate that the submergence depth has a significant impact on the stability of the anchor during the lowering process, particularly at the initial lowering phase, resulting in higher wave-induced forces and increased risks of instability. With the use of streamlined anchor shapes, compared with the results for the baseline anchor, a reduction of 20.9% and 16.6% in heave, 47.8% and 45.8% in pitch, and 73.4% and 75.3% in surge motions are observed for C- and V-shaped anchors, respectively. When comparing the influence of different wave parameters, compared with the wave height, the wavelength is shown to drive undesirable anchor dynamic motions.

ASJC Scopus subject areas

Cite this

Numerical Investigation on the Motion Dynamics of Submerged Gravity Anchors Exposed to Wave Action. / Vanjakula, Vinay Kumar; Windt, Christian; Adam, Frank et al.
In: Journal of Waterway, Port, Coastal and Ocean Engineering, Vol. 151, No. 1, 04024023, 2025.

Research output: Contribution to journalArticleResearchpeer review

Vanjakula VK, Windt C, Adam F, Goseberg N. Numerical Investigation on the Motion Dynamics of Submerged Gravity Anchors Exposed to Wave Action. Journal of Waterway, Port, Coastal and Ocean Engineering. 2025;151(1):04024023. Epub 2024 Oct 25. doi: 10.1061/JWPED5.WWENG-2122
Download
@article{72d5ac71daae422c88f552808174df21,
title = "Numerical Investigation on the Motion Dynamics of Submerged Gravity Anchors Exposed to Wave Action",
abstract = "This paper presents a numerical modeling approach to analyze the dynamic response of gravity anchors subjected to waves at various submergence depths. The aim is to model stages of lowering during the installation process of offshore wind energy installations. The study includes an investigation of the effect of different outer shapes of the gravity anchor to understand the influence on the dynamic response of the anchor. The results demonstrate that the submergence depth has a significant impact on the stability of the anchor during the lowering process, particularly at the initial lowering phase, resulting in higher wave-induced forces and increased risks of instability. With the use of streamlined anchor shapes, compared with the results for the baseline anchor, a reduction of 20.9% and 16.6% in heave, 47.8% and 45.8% in pitch, and 73.4% and 75.3% in surge motions are observed for C- and V-shaped anchors, respectively. When comparing the influence of different wave parameters, compared with the wave height, the wavelength is shown to drive undesirable anchor dynamic motions.",
author = "Vanjakula, {Vinay Kumar} and Christian Windt and Frank Adam and Nils Goseberg",
note = "Publisher Copyright: {\textcopyright} 2024 This work is made available under the terms of the Creative Commons Attribution 4.0 International license.",
year = "2025",
doi = "10.1061/JWPED5.WWENG-2122",
language = "English",
volume = "151",
journal = "Journal of Waterway, Port, Coastal and Ocean Engineering",
issn = "0733-950X",
publisher = "American Society of Civil Engineers (ASCE)",
number = "1",

}

Download

TY - JOUR

T1 - Numerical Investigation on the Motion Dynamics of Submerged Gravity Anchors Exposed to Wave Action

AU - Vanjakula, Vinay Kumar

AU - Windt, Christian

AU - Adam, Frank

AU - Goseberg, Nils

N1 - Publisher Copyright: © 2024 This work is made available under the terms of the Creative Commons Attribution 4.0 International license.

PY - 2025

Y1 - 2025

N2 - This paper presents a numerical modeling approach to analyze the dynamic response of gravity anchors subjected to waves at various submergence depths. The aim is to model stages of lowering during the installation process of offshore wind energy installations. The study includes an investigation of the effect of different outer shapes of the gravity anchor to understand the influence on the dynamic response of the anchor. The results demonstrate that the submergence depth has a significant impact on the stability of the anchor during the lowering process, particularly at the initial lowering phase, resulting in higher wave-induced forces and increased risks of instability. With the use of streamlined anchor shapes, compared with the results for the baseline anchor, a reduction of 20.9% and 16.6% in heave, 47.8% and 45.8% in pitch, and 73.4% and 75.3% in surge motions are observed for C- and V-shaped anchors, respectively. When comparing the influence of different wave parameters, compared with the wave height, the wavelength is shown to drive undesirable anchor dynamic motions.

AB - This paper presents a numerical modeling approach to analyze the dynamic response of gravity anchors subjected to waves at various submergence depths. The aim is to model stages of lowering during the installation process of offshore wind energy installations. The study includes an investigation of the effect of different outer shapes of the gravity anchor to understand the influence on the dynamic response of the anchor. The results demonstrate that the submergence depth has a significant impact on the stability of the anchor during the lowering process, particularly at the initial lowering phase, resulting in higher wave-induced forces and increased risks of instability. With the use of streamlined anchor shapes, compared with the results for the baseline anchor, a reduction of 20.9% and 16.6% in heave, 47.8% and 45.8% in pitch, and 73.4% and 75.3% in surge motions are observed for C- and V-shaped anchors, respectively. When comparing the influence of different wave parameters, compared with the wave height, the wavelength is shown to drive undesirable anchor dynamic motions.

UR - http://www.scopus.com/inward/record.url?scp=85210320894&partnerID=8YFLogxK

U2 - 10.1061/JWPED5.WWENG-2122

DO - 10.1061/JWPED5.WWENG-2122

M3 - Article

AN - SCOPUS:85210320894

VL - 151

JO - Journal of Waterway, Port, Coastal and Ocean Engineering

JF - Journal of Waterway, Port, Coastal and Ocean Engineering

SN - 0733-950X

IS - 1

M1 - 04024023

ER -