<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This paper explores the impacts of reconfiguration and leaf morphology on the flow downstream of a flexible foliated plant. 3D acoustic Doppler velocimetry and particle image velocimetry were used to experimentally investigate the hydrodynamic interaction between a foliated plant and the flow, testing two plants with different leaves morphology under different bulk flow velocities. The model vegetation was representative of riparian vegetation species in terms of plants hydrodynamic behavior and leaf to stem area ratio. To explore the effects of the seasonal variability of vegetation on the flow structure, leafless conditions were tested. Reconfiguration resulted in a decrease of the frontal projected area of the plants up to the 80% relative to the undeformed value. Such changes in plant frontal area markedly affected the spatial distributions of mean velocity and turbulence intensities, altering the local exchanges of momentum. At increasing reconfiguration, the different plant morphology influenced the mean and turbulent wake width. The leafless stem exhibited a rigid behavior, with the flow in the wake being comparable to that downstream of a rigid cylinder. The study revealed that the flexibility-induced reconfiguration of plants can markedly affect the local distribution of flow properties in the wake, potentially affecting transport processes at the scale of the plant and its subparts.</p>
</abstract>

This paper explores the impacts of reconfiguration and leaf morphology on the flow downstream of a flexible foliated plant. 3D acoustic Doppler velocimetry and particle image velocimetry were used to experimentally investigate the hydrodynamic interaction between a foliated plant and the flow, testing two plants with different leaves morphology under different bulk flow velocities. The model vegetation was representative of riparian vegetation species in terms of plants hydrodynamic behavior and leaf to stem area ratio. To explore the effects of the seasonal variability of vegetation on the flow structure, leafless conditions were tested. Reconfiguration resulted in a decrease of the frontal projected area of the plants up to the 80% relative to the undeformed value. Such changes in plant frontal area markedly affected the spatial distributions of mean velocity and turbulence intensities, altering the local exchanges of momentum. At increasing reconfiguration, the different plant morphology influenced the mean and turbulent wake width. The leafless stem exhibited a rigid behavior, with the flow in the wake being comparable to that downstream of a rigid cylinder. The study revealed that the flexibility-induced reconfiguration of plants can markedly affect the local distribution of flow properties in the wake, potentially affecting transport processes at the scale of the plant and its subparts.

Impact of reconfiguration on the flow downstream of a flexible foliated plant

Department of Civil, Architectural and Environmental Engineering

Journal of Hydrology and Hydromechanics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Impact of reconfiguration on the flow downstream of a flexible foliated plant"}

This paper explores the impacts of reconfiguration and leaf morphology on the flow downstream of a flexible foliated plant. 3D acoustic Doppler velocimetry and...

Impact of reconfiguration on the flow downstream of a flexible foliated plant

Published Online: Aug 23, 2022

Page range: 357 - 375

Received: Nov 18, 2021

Accepted: Jun 09, 2022

DOI: https://doi.org/10.2478/johh-2022-0017

Keywords
Flow-vegetation interaction, Riparian vegetation, Plant reconfiguration, Leaf morphology, Turbulence, Particle image velocimetry, Acoustic Doppler velocimetry

© 2022 Marco Maio et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Impact of reconfiguration on the flow downstream of a flexible foliated plant

Published Online: Aug 23, 2022

Page range: 357 - 375

Received: Nov 18, 2021

Accepted: Jun 09, 2022

DOI: https://doi.org/10.2478/johh-2022-0017

KeywordsFlow-vegetation interaction, Riparian vegetation, Plant reconfiguration, Leaf morphology, Turbulence, Particle image velocimetry, Acoustic Doppler velocimetry

© 2022 Marco Maio et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Flow-vegetation interaction, Riparian vegetation, Plant reconfiguration, Leaf morphology, Turbulence, Particle image velocimetry, Acoustic Doppler velocimetry