Details
| Original language | English |
|---|---|
| Pages (from-to) | 46-61 |
| Number of pages | 16 |
| Journal | Journal of hydraulic research |
| Volume | 60 |
| Issue number | 1 |
| Publication status | Published - 30 Mar 2021 |
| Externally published | Yes |
Abstract
Aquatic vegetation is an important component of coastal and riverine environments and plays a significant role in shaping their evolution. The extent and nature of eco-hydraulic interaction depends upon the geometric and biophysical properties of the vegetation which affect the drag force and vegetation reconfiguration. Such vegetation properties commonly vary along each stem. However, this variability has not received significant attention in previous models. Here, we present a biomechanical model, based upon local parameterization of stem properties which can represent variable rigidity stems. The model is validated for straight and curved beams before being applied to experimental data using surrogates with variable thickness and Young’s modulus. Finally, the model is applied to saltmarsh vegetation data. The results for saltmarsh vegetation show that using stem-averaged properties may result in errors in predicted drag force of up to 26% and highlights the need to consider the reconfiguration of variable rigidity stems.
Keywords
- Bending stiffness, biomechanics, flexural rigidity, flow-biota interactions, surrogate vegetation, vegetated flows
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Environmental Science(all)
- Water Science and Technology
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In: Journal of hydraulic research, Vol. 60, No. 1, 30.03.2021, p. 46-61.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modelling flow-induced reconfiguration of variable rigidity aquatic vegetation
AU - Marjoribanks, Timothy I.
AU - Paul, Maike
N1 - Funding information: MP acknowledges funding by the Deutsche Forschungsgemeinschaft [grant number: PA 2547/1-1], the Lower-Saxon Ministry of Research and Culture and Volkswagen Foundation [FKZ: 76251-17-5/19]. We thank Prof. Stephen Rice from the School of Geography and Environment, Loughborough University for providing access to the flume facilities and Prof. Qingping Zou for providing data for model validation. Data and code relating to this paper are available on the Loughborough University Data Repository (DOI:10.17028/rd.lboro.12077814). We would also like to thank the associate editor and three anonymous reviewers whose comments have improved the paper.
PY - 2021/3/30
Y1 - 2021/3/30
N2 - Aquatic vegetation is an important component of coastal and riverine environments and plays a significant role in shaping their evolution. The extent and nature of eco-hydraulic interaction depends upon the geometric and biophysical properties of the vegetation which affect the drag force and vegetation reconfiguration. Such vegetation properties commonly vary along each stem. However, this variability has not received significant attention in previous models. Here, we present a biomechanical model, based upon local parameterization of stem properties which can represent variable rigidity stems. The model is validated for straight and curved beams before being applied to experimental data using surrogates with variable thickness and Young’s modulus. Finally, the model is applied to saltmarsh vegetation data. The results for saltmarsh vegetation show that using stem-averaged properties may result in errors in predicted drag force of up to 26% and highlights the need to consider the reconfiguration of variable rigidity stems.
AB - Aquatic vegetation is an important component of coastal and riverine environments and plays a significant role in shaping their evolution. The extent and nature of eco-hydraulic interaction depends upon the geometric and biophysical properties of the vegetation which affect the drag force and vegetation reconfiguration. Such vegetation properties commonly vary along each stem. However, this variability has not received significant attention in previous models. Here, we present a biomechanical model, based upon local parameterization of stem properties which can represent variable rigidity stems. The model is validated for straight and curved beams before being applied to experimental data using surrogates with variable thickness and Young’s modulus. Finally, the model is applied to saltmarsh vegetation data. The results for saltmarsh vegetation show that using stem-averaged properties may result in errors in predicted drag force of up to 26% and highlights the need to consider the reconfiguration of variable rigidity stems.
KW - Bending stiffness
KW - biomechanics
KW - flexural rigidity
KW - flow-biota interactions
KW - surrogate vegetation
KW - vegetated flows
UR - http://www.scopus.com/inward/record.url?scp=85103360996&partnerID=8YFLogxK
U2 - 10.1080/00221686.2020.1866693
DO - 10.1080/00221686.2020.1866693
M3 - Article
AN - SCOPUS:85103360996
VL - 60
SP - 46
EP - 61
JO - Journal of hydraulic research
JF - Journal of hydraulic research
SN - 0022-1686
IS - 1
ER -