Numerical Simulation of Free Surface and Flow Field Turbulence in a Circular Channel with the Side Weir in Subcritical Flow
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Hamed Azimi
Abstract
When flow surface is higher than of a side weir crest, the overflow spilt over the crest and divert into a side channel. These structures are extensively used in urban sewage disposal networks, water supply systems, and drainage and flood diversion networks. This study simulates stream free surface, discharge over a sharp-crest side weir, and discharge coefficient of a side weir in a circular channel using FLOW-3D software. Numerical model results were compared with the experimental ones and the comparison proved an acceptable consistency between the numerical and experimental results. RNG k-ε turbulence model was used for simulating flow turbulence. The volume of fluid (VOF) method was used in this CFD analysis for predicting changes of flow free surface. Then, the numerical simulation results were examined for discharge coefficient of the side weir and flow free surface for different discharge passing through the main channel. The changes of dividing stream surface from main channel bed toward stream free surface were examined. The concluding section assessed the effect of shape of a circular channel on the pattern and intensity of a secondary flow in the main channel and the impacts of the discharge passing through the circular channel on height of stagnation point and shear stress pattern in the main channel bed.
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© 2017 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Transient Analysis of Heat Transfer by Natural Convection Along a Vertical Wavy Surface
- Three-Dimensional Flow Problems in a Lid-Driven Cubical Cavity with a Circular Cylinder
- Complete Controllability of Fractional Impulsive Multivalued Stochastic Partial Integrodifferential Equations with State-Dependent Delay
- Dynamic Stability of a Thin Film Bonded to a Compliant Substrate Subjected to a Step Load with Damping
- Existence Results to Some Damped-Like Fractional Differential Equations
- A Numerical Method for Solving Two-Dimensional Elliptic Interface Problems with Nonhomogeneous Flux Jump Condition and Nonlinear Jump Condition
- Numerical Simulation of Free Surface and Flow Field Turbulence in a Circular Channel with the Side Weir in Subcritical Flow
- Comparative Analysis of Various Control Strategies for a Nonlinear CSTR System
- Non-Polynomial Spline Method for One Dimensional Nonlinear Benjamin-Bona-Mahony-Burgers Equation
- The Binary Nonlinearization of the Super Integrable System and Its Self-Consistent Sources
Artikel in diesem Heft
- Frontmatter
- Transient Analysis of Heat Transfer by Natural Convection Along a Vertical Wavy Surface
- Three-Dimensional Flow Problems in a Lid-Driven Cubical Cavity with a Circular Cylinder
- Complete Controllability of Fractional Impulsive Multivalued Stochastic Partial Integrodifferential Equations with State-Dependent Delay
- Dynamic Stability of a Thin Film Bonded to a Compliant Substrate Subjected to a Step Load with Damping
- Existence Results to Some Damped-Like Fractional Differential Equations
- A Numerical Method for Solving Two-Dimensional Elliptic Interface Problems with Nonhomogeneous Flux Jump Condition and Nonlinear Jump Condition
- Numerical Simulation of Free Surface and Flow Field Turbulence in a Circular Channel with the Side Weir in Subcritical Flow
- Comparative Analysis of Various Control Strategies for a Nonlinear CSTR System
- Non-Polynomial Spline Method for One Dimensional Nonlinear Benjamin-Bona-Mahony-Burgers Equation
- The Binary Nonlinearization of the Super Integrable System and Its Self-Consistent Sources
