Study on Conveyance Coefficient Influenced by Momentum Exchange Under Steady and Unsteady Flows in Compound Open Channels

Rahimi, Hamidreza; Yuan, Saiyu; Tang, Xiaonan; Lu, Chunhui; Singh, Prateek Kumar; Dehrashid, Fariba Ahmadi

doi:10.1007/s11269-022-03130-3

Water Resour Manage

2022

DOI: 10.1007/s11269-022-03130-3

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Study on Conveyance Coefficient Influenced by Momentum Exchange Under Steady and Unsteady Flows in Compound Open Channels

Hamidreza Rahimi

Saiyu Yuan

Xiaonan Tang

et al.

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Cited by 4 publications

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“…Additionally, the influence of cross-sectional orientation has been considered for simulating distributed channel routing [27]. This analysis has been developed by considering the unsteady governing equations in open channels [28].…”

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confidence: 99%

Explicit Scheme for a Hydrological Channel Routing: Mathematical Model and Practical Application

Arrieta-Pastrana,

Coronado-Hernández,

Coronado-Hernández

2024

Water

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The computation of hydrographs in large watersheds necessitates utilizing channel routing, which calculates the movement of hydrographs along channel branches. Routing methods rely on an implicit scheme to facilitate numerical resolution, which requires more computational time than the explicit scheme. This study presents an explicit scheme channel routing model that offers a versatile approach to open channel flow analysis. The model is based on mass conservation principles and Manning equations, and it can accommodate varying bed slopes, making it highly adaptable to diverse hydraulic scenarios. In addition, the proposed model considers backwater effects, which enhances its applicability in practical scenarios. The model was tested in a practical application on a rectangular channel with a width of 7 m, and the results showed that it can accurately predict outflow hydrographs and handle different flow conditions. Comparative analyses with existing models revealed that the proposed model’s performance in generating water flow oscillations was competitive. Moreover, sensitivity analyses were performed, which showed that the model is highly responsive to parameter variations, such as Manning’s coefficient, bed slope, and channel width. The comparison of peak flows and peak times between the proposed model and existing methods further emphasized the model’s reliability and efficiency in simulating channel routing processes. This research introduces a valuable addition to the field of hydrology by proposing a practical and effective channel routing model that integrates essential hydraulic principles and parameters. The results of the proposed model (lumped routing) are comparable with the solution provided by the Muskingum–Cunge method (distributed routing). It is of utmost importance to note that the proposed model applies to channel branches with bed slopes below 6°.

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confidence: 99%

Explicit Scheme for a Hydrological Channel Routing: Mathematical Model and Practical Application

Arrieta-Pastrana,

Coronado-Hernández,

Coronado-Hernández

2024

Water

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Validation of Computational Fluid Dynamics Approach of Lateral Velocity Profile Due to Curvature Effect on Floodplain Levee of Two-stage Meandering Channel

Rathor

Mohanta

Patra

2022

Water Resour Manage

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Refined Scheduling Based on Dynamic Capacity Model for Short-term Hydropower Generation

Zhang

Zhang²,

Wen³

et al. 2022

Water Resour Manage

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Study on Conveyance Coefficient Influenced by Momentum Exchange Under Steady and Unsteady Flows in Compound Open Channels

Cited by 4 publications

References 46 publications

Explicit Scheme for a Hydrological Channel Routing: Mathematical Model and Practical Application

Explicit Scheme for a Hydrological Channel Routing: Mathematical Model and Practical Application

Validation of Computational Fluid Dynamics Approach of Lateral Velocity Profile Due to Curvature Effect on Floodplain Levee of Two-stage Meandering Channel

Refined Scheduling Based on Dynamic Capacity Model for Short-term Hydropower Generation

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