A Novel and Enhanced Calibration of the Tilting Weir as a Flow Measurement Structure

Pugh, Joseph E.; Venayagamoorthy, S. Karan; Gates, Timothy K.; Berni, Céline; Rastello, Marie

doi:10.1061/jhend8.hyeng-13796

J. Hydraul. Eng.

2024

DOI: 10.1061/jhend8.hyeng-13796

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A Novel and Enhanced Calibration of the Tilting Weir as a Flow Measurement Structure

Joseph E. Pugh,

S. Karan Venayagamoorthy,

Timothy K. Gates

et al.

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Cited by 3 publications

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Design and implementation of tilting‐plate drainage equipment for paddy field

Duan,

Xiang,

Shi

et al. 2024

Engineering Reports

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Drainage equipment is an important part of paddy field drainage and irrigation system, and its performance research and application are conducive to the promotion and implementation of high‐standard farmland construction. Aiming at the different water demand of rice in different growing stages, low water level control precision, large manual operation and extensive management of existing drainage machinery, a tilting‐plate drainage equipment using upper overflow mode was proposed in this paper. Based on the Geneva mechanism principle, a unique linkage mechanism is designed, which can realize water retaining operation and silt discharge operation through a single motor drive, and the relationship between the motor angle and the water retaining height is established. Through mechanical analysis and dynamic simulation of the mechanism, the motion characteristics of the water baffle, silt plate and the change of the motor torque are studied. A remote control system based on a 4G module is designed to control the drainage equipment easily through the user layer. The performance test of the prototype shows that the precision error of the optimized water retaining height control is less than 3.75%. The maximum height of water retaining operation is 180 mm, and the maximum load of silt discharge operation is 10 kg, which can meet the actual operation requirements. The design is beneficial to improve the precision and intelligence level of paddy field drainage management, and the research process can provide some help for the development and application of this kind of equipment.

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Design and implementation of tilting‐plate drainage equipment for paddy field

Duan,

Xiang,

Shi

et al. 2024

Engineering Reports

View full text Add to dashboard Cite

show abstract

Study of the hydraulic characteristics of an airfoil‐shaped weir trough measurement and control integrated facility combined with numerical simulation

Su,

Zhang,

et al. 2024

Irrigation and Drainage

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In this study, an integrated measurement and control facility with an airfoil weir as the primary overcurrent structure is proposed by considering the flow characteristics over different shapes of weir trough facilities as well as the approach of merging measurement and control functions. The incomplete self‐similarity theory and dimensional analysis are used to derive the stage‐discharge relationship. The hydraulic characteristics of the facility under different shape‐related parameters, weir crest heights (rotation angles), and flows are studied by combining model testing and numerical simulation. The findings demonstrate that changes in shape‐ related parameters and rotation angle do not affect the linear relationship between the water depths in the critical and reference sections. The mean error in the discharge formula derived by dimensional analysis is 2%. The Froude number is less than 0.25 under all the working conditions. From the backwater height and head loss, it can be seen that the larger the P/C (the maximum airfoil thickness P to the chord length C ratio) value of the facility under the premise of unifying the weir crest height, the better the overflow capacity. When the height of the weir crest is 0.3778 m, the negative pressure on the surface of the airfoil weir increases with increasing P/C value.

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Physics-Informed Neural Networks for Steady-State Weir Flows Using the Serre–Green–Naghdi Equations

Ai,

Ma,

et al. 2025

J. Hydraul. Eng.

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A Novel and Enhanced Calibration of the Tilting Weir as a Flow Measurement Structure

Cited by 3 publications

References 24 publications

Design and implementation of tilting‐plate drainage equipment for paddy field

Design and implementation of tilting‐plate drainage equipment for paddy field

Study of the hydraulic characteristics of an airfoil‐shaped weir trough measurement and control integrated facility combined with numerical simulation

Physics-Informed Neural Networks for Steady-State Weir Flows Using the Serre–Green–Naghdi Equations

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