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Open AccessArticle

Impact of Vegetation Density on the Wake Structure

State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610000, China
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Water 2019, 11(6), 1266; https://doi.org/10.3390/w11061266
Received: 26 February 2019 / Revised: 7 June 2019 / Accepted: 14 June 2019 / Published: 17 June 2019
(This article belongs to the Section Aquatic Systems—Quality and Contamination)
Research of interactions between in-channel vegetation and flow structure is important for the restoration of aquatic ecosystems. This study aims to investigate the impact of the vegetation patch density on the wake structure. We used uniform fiberglass circular cylinders to simulate the non-submerged rigid plant community. In addition, a wide range of vegetation patch densities was considered and a 3D acoustic Doppler velocimeter (ADV) was used to measure local flow velocities. High-density vegetation patches correlated with a high maximum turbulent kinetic energy and a double-peak phenomenon for the lateral distribution. In conclusion, differences between Reynolds shear stresses near the bed surface upstream and downstream of vegetation patches correlate with the vegetation density. View Full-Text
Keywords: vegetation density; turbulent kinetic energy; Reynolds shear stress vegetation density; turbulent kinetic energy; Reynolds shear stress
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Yu, Z.; Wang, D.; Liu, X. Impact of Vegetation Density on the Wake Structure. Water 2019, 11, 1266.

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