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Rosim – Insights
CFD modelling of overflow structures
In cases where we need a more detailed hydraulic understanding of how structures in the stormwater and wastewater system function, we employ CFD (Computational Fluid Dynamics) modelling.
For overflow structures, we can use CFD modelling to:
- Understand how water flows and how the overflow operates.
- Identify where turbulence occurs and where sensors should be placed.
- Derive the stage–discharge (level–flow) relationship to support instrumentation.
CFD modelling for overflow structures
For this work, we have chosen to procure and use FLOW-3D HYDRO—a software package specifically developed to solve a wide range of practical hydraulic problems. You can find more information about the software here:
https://www.flow3d.com/products/flow-3d-hydro/
To model an overflow structure, we first build a geometric CAD model comprising the inlet and outlet pipes and the overflow structure.
CAD model of the overflow structure
We generate an appropriate mesh and configure the numerical and physical parameters before running the simulation.
Mastering CFD modelling requires substantial experience, and over time we have developed this expertise at Geo Rosim.
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