Details
| Original language | English |
|---|---|
| Article number | 104232 |
| Number of pages | 25 |
| Journal | Journal of fluids and structures |
| Volume | 133 |
| Early online date | 5 Dec 2024 |
| Publication status | Published - Mar 2025 |
Abstract
Submerged vegetation is becoming more and more relevant as a nature-based solution for coastal protection schemes, counteracting the effects of climate change and sea level rise. The numerical model REEF3D has been used to simulate the motion of and forces exerted on flexible vegetation under unidirectional currents. This study emphasizes the critical need for accurate solutions obtained by numerical models to investigate the complex ecosystem services, adopting a direct forcing approach using the immersed boundary method. The fluid–structure interaction capability within the finite difference model is comprehensively evaluated for the simulation of stem motions and forces exerted on flexible vegetation under varying unidirectional flows. Thresholds for numerical parameters, including a minimum number of 25 rigid elements composing the stem, are identified for accurate solutions. The necessity of using large eddy simulations and a Smagorinsky constant of 0.1 to simulate the turbulent flow is demonstrated. The study confirms the accuracy of the implemented fluid–structure interaction model to replicate stem bending (less than 10 % deviation relative to the stem length) and forces across varying hydrodynamic conditions.
Keywords
- Flexible vegetation, Fluid–structure interaction, Large eddy simulation, Nature-based solutions, REEF3D
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
Sustainable Development Goals
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In: Journal of fluids and structures, Vol. 133, 104232, 03.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A comprehensive numerical study on the current-induced fluid–structure interaction of flexible submerged vegetation
AU - Prüter, Inga
AU - Spröer, Felix
AU - Keimer, Kara
AU - Lojek, Oliver
AU - Windt, Christian
AU - Schürenkamp, David
AU - Bihs, Hans
AU - Nistor, Ioan
AU - Goseberg, Nils
N1 - Publisher Copyright: © 2024 The Authors
PY - 2025/3
Y1 - 2025/3
N2 - Submerged vegetation is becoming more and more relevant as a nature-based solution for coastal protection schemes, counteracting the effects of climate change and sea level rise. The numerical model REEF3D has been used to simulate the motion of and forces exerted on flexible vegetation under unidirectional currents. This study emphasizes the critical need for accurate solutions obtained by numerical models to investigate the complex ecosystem services, adopting a direct forcing approach using the immersed boundary method. The fluid–structure interaction capability within the finite difference model is comprehensively evaluated for the simulation of stem motions and forces exerted on flexible vegetation under varying unidirectional flows. Thresholds for numerical parameters, including a minimum number of 25 rigid elements composing the stem, are identified for accurate solutions. The necessity of using large eddy simulations and a Smagorinsky constant of 0.1 to simulate the turbulent flow is demonstrated. The study confirms the accuracy of the implemented fluid–structure interaction model to replicate stem bending (less than 10 % deviation relative to the stem length) and forces across varying hydrodynamic conditions.
AB - Submerged vegetation is becoming more and more relevant as a nature-based solution for coastal protection schemes, counteracting the effects of climate change and sea level rise. The numerical model REEF3D has been used to simulate the motion of and forces exerted on flexible vegetation under unidirectional currents. This study emphasizes the critical need for accurate solutions obtained by numerical models to investigate the complex ecosystem services, adopting a direct forcing approach using the immersed boundary method. The fluid–structure interaction capability within the finite difference model is comprehensively evaluated for the simulation of stem motions and forces exerted on flexible vegetation under varying unidirectional flows. Thresholds for numerical parameters, including a minimum number of 25 rigid elements composing the stem, are identified for accurate solutions. The necessity of using large eddy simulations and a Smagorinsky constant of 0.1 to simulate the turbulent flow is demonstrated. The study confirms the accuracy of the implemented fluid–structure interaction model to replicate stem bending (less than 10 % deviation relative to the stem length) and forces across varying hydrodynamic conditions.
KW - Flexible vegetation
KW - Fluid–structure interaction
KW - Large eddy simulation
KW - Nature-based solutions
KW - REEF3D
UR - http://www.scopus.com/inward/record.url?scp=85211064150&partnerID=8YFLogxK
U2 - 10.1016/j.jfluidstructs.2024.104232
DO - 10.1016/j.jfluidstructs.2024.104232
M3 - Article
AN - SCOPUS:85211064150
VL - 133
JO - Journal of fluids and structures
JF - Journal of fluids and structures
SN - 0889-9746
M1 - 104232
ER -