Cited by Flow Characteristics in Open Channels with Non-Submerged Rigid Vegetation Landscape

Flow Characteristics in Open Channels with Non-Submerged Rigid Vegetation Landscape DOI

и другие.

Water, Год журнала: 2024, Номер 16(19), С. 2759 - 2759

Опубликована: Сен. 27, 2024

The commercial CFD package Fluent and the Reynolds stress model were used to simulate hydraulic characteristics with three types of vegetation distribution: longitudinal, interlaced patch. Each type was aggregated middle line l water flow in an equal proportion 0.5, resulting a total nine landscape arrangements. numerical verified showed high level consistency experimental comparison; results indicate following: (1) As distribution on both sides becomes increasingly concentrated from loose state flow, velocity declines maximum rises, greater stress, more powerful shear layer, contributing turbulence, generating mass momentum exchange enhancing vertical transport momentum. (2) Compared gap area, area is smaller, turbulent kinetic energy larger bottom larger; sediment particles tend deposit while smaller sediments area. At same time, prone deposits than (3) Under density, whether test or wake blocking capacity deposition are following order: patch pattern > longitudinal pattern.

Язык: Английский

Effect of antibiotics on diverse aquatic plants in aquatic ecosystems DOI

Yiting Li, Yani Zhang, Dongyao Wang

и другие.

Aquatic Toxicology, Год журнала: 2025, Номер 281, С. 107289 - 107289

Опубликована: Фев. 22, 2025

Язык: Английский

Процитировано

Experimental study of grain saltation in open channel flows with simulated submerged vegetation DOI

Lichan Zheng,

Ran-Ran Mao,

Nian‐Sheng Cheng

и другие.

Physics of Fluids, Год журнала: 2025, Номер 37(3)

Опубликована: Март 1, 2025

Saltation is the predominant mode of bedload sediment transport. However, current knowledge on grain saltation largely derived from studies conducted in purely shear open channel flows, with limited information available for vegetated flows. This study endeavors to explore vegetation-affected by conducting laboratory experiments flows simulated submerged vegetation. Particle image velocimetry technique and particle tracking system were used capture flow field track saltating grains over three representative planes, respectively. The results show that stem-induced turbulence significantly intensified variation trajectories grains. vertical movement enhanced, while their streamwise velocity travel distance are reduced. Due increases increasing bed, tend accelerate ascending phase but decelerate descending phase. At same elevation, during greater than this difference mitigated wake generated vegetation stem. Furthermore, probability distribution occurrence measured between two adjacent rows stems can be represented using an exponential function, suggesting still modeled as a diffusion process. These provide important step toward understanding mechanisms behind under conditions.

Язык: Английский

Процитировано

Study on urban open channel cross-sectional overcurrent under composite ecological floating bed layout DOI