Three-dimensional Modelling of Flow in Curved Compound Open Channels
Publish place: 11th International River Engineering Conference
Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
IREC11_024
تاریخ نمایه سازی: 27 تیر 1398
Abstract:
Flow in curved compound channels is completely three-dimensional. The centrifugal force intensifies the secondary currents and the interfaces between the main channel and the floodplains generate some new secondary current cells which grow from the bed towards the surface. In order to take into consideration all aspects of flow in these kinds of channels, numerical modelling is performed using an open source computation fluid dynamic (CFD) software, namely OpenFOAM. In the present study, the Reynolds Averaged Navier-Stocks equations (RANS) are solved, and a single-phase solver, simpleFoam, is applied with an appropriate boundary condition on the free-surface. Velocity profiles obtained from this model show a good accuracy in comparison with the experimental results. The distribution of boundary shear stress through the whole curve is presented.
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Authors
Fatemeh Farshi
Graduated, Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran
Abdorreza Kabiri-Samani
Associate Professor, Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran
Mohammad R Chamani
Associate Professor, Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran
Hossein Atoof
Graduated, Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran