RSM 3D Turbulent Flow to Improve Sewer Net Instrumentation
Publication: World Environmental and Water Resources Congress 2008: Ahupua'A
Abstract
The aim of this work is the interpolation of a mean flow stream from discreet data supplied by a Doppler velocimeter. This is why a precise flow modeling in needed to be implemented in a code designed for sewer net conduit. A 2D mesh is used to calculate 3D velocity flow. This work deals with the description of a Reynolds stress model for the numerical simulation of uniform 3D turbulent open-channel flows. The finite volume method is used for the numerical solution (with Matlab) of the flow equations and transport equations of the Reynolds stress components. First the k-ε model has been implanted to test the method but it is found that both production terms by anisotropy of Reynolds normal stress and by Reynolds shear stress contribute to the generation of secondary currents. The results presented here are the calculation for full section flow in a rectangular channel which is one step in the overall project. Last the velocity profile has been measured in a 20m long experimental channel to validate the code. There is a good agreement between first measurements and the results predicted.
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Copyright
© 2008 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Engineering fundamentals
- Equipment and machinery
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Hydrologic engineering
- Infrastructure
- Instrumentation
- Lifeline systems
- Models (by type)
- Numerical models
- Reynolds stress
- Sewers
- Shear stress
- Stress (by type)
- Structural analysis
- Structural engineering
- Three-dimensional flow
- Three-dimensional models
- Turbulent flow
- Water and water resources
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