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

Title:

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

Creator:

Maio, Marco, Marini, Gustavo, Fontana, Nicola, Gualtieri, Paola, and Caroppi, Gerardo

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:157447bd-e81b-44b1-afe4-ff776ba4bc76
uuid:157447bd-e81b-44b1-afe4-ff776ba4bc76
doi:10.2478/johh-2022-0017

Subject:

flow-vegetation interaction, riparian vegetation, plant reconfiguration, leaf morphology, turbulence, particle image velocimetry, and acoustic Doppler velocimetry

Type:

model:article and TEXT

Format:

počítač and online zdroj

Description:

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.

Language:

Slovak

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

357-375

Source:

Journal of hydrology and hydromechanics | 2022 Volume:70 | Number:3

Harvested from:

CDK

Metadata only:

false