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Image of Journal of Applied Nonlinear Dynamics
ISSN:2325-6192 (print)
ISSN:2325-6206 (online)
Journal of Environmental Accounting and Management
António Mendes Lopes (editor), Jiazhong Zhang(editor)
António Mendes Lopes (editor)

University of Porto, Portugal

Email: aml@fe.up.pt

Jiazhong Zhang (editor)

School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi Province 710049, China

Fax: +86 29 82668723 Email: jzzhang@mail.xjtu.edu.cn

Laboratory Investigation of the Effect of Particle and Vegetation Roughness on Changes in Drag Force in an Open Channel

Journal of Environmental Accounting and Management 12(3) (2024) 221--230 | DOI:10.5890/JEAM.2024.09.001

Kimiya Salahi$^{1}$, Javad Ahadiyan$^{1}$, Yu-hong Zeng$^{2}$, Hossein Azizi Nadian$^{3}$, Mohsen Sajjadi$^{1}$

$^{1}$ Water and Environmental Engineering Faculty, Shahid Chamran University of Ahvaz. Center of Excellence of the Irrigation and Drainage Networks Improvement and Maintenance, Ahvaz, Iran

$^{2}$ State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China

$^{3}$ Department of Civil Environmental Architectural Engineering and Mathematics (DICATAM), Universit`{a} degli Studi di Brescia, Brescia, Italy

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Abstract

The main goal of the current research was to investigate the effect of particle and vegetation roughness arrangement on changes in the drag force in an open channel in different configurations, flow rates, and water depths. Therefore, a series of experiments were conducted in a flume with a length of 3.8 meters, a width of 0.8 meters, and a height of 0.55 meters located in the hydraulic laboratory of the Shahid Chamran University of Ahvaz. Drag forces were obtained for each test. The results of the tests showed the increase in the flow rate in most of the tests directly affected the amount of drag force. On average, at 15 L/s discharge, with an increase in depth from 10 to 20 cm, the momentum absorption can reach 60\% for the particles' roughness. While the same conditions have occurred for vegetation roughness, the momentum absorption is less than 30\%. The results provided effective results to know the performance of different arrangements in the scope of this research.

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