Broad-crested Weir CFD Simulation by ANSYS Fluent
$160.00 $80.00 Student Discount
- This project involves the simulation of a broad-crested weir using ANSYS Fluent to analyze fluid dynamics parameters.
- The primary goals are to assess the flow rate, drag force, and water level at various sections of the weir and compare these with experimental results.
- The geometry is created in SpaceClaim and meshed in ANSYS Meshing, resulting in a structured mesh with 1,222,021 elements for improved accuracy.
- The CFD simulation employs a pressure-based solver and a multiphase VOF model to address the incompressibility of fluids, with air as the primary phase and water as the secondary.
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Description
Broad-crested Weir CFD Simulation
Project Description:
In this project, a broad-crested weir is simulated. The study aims to investigate flow rate, drag force and water level in different sections to compare with experimental results. The inlet has 98.5+30.4 mm height.
Geometry and mesh:
The geometry of the broad-crested weir is created using at SpaceClaim software. Then the geometry is inserted into the Ansys Meshing for the generated mesh. For better visualization & simulation, especially around the water surface region, a structure mesh grid is generated, resulting in 1222021 Elements.
CFD Simulation:
The pressure-based solver is employed due to the incompressibility of the fluids. The gravitational acceleration is considered. Plus, the multiphase VOF model is enabled: the primary phase is air & the secondary phase is water.
Results:
After the simulation, the broad-crested weir, 2D & 3D contours are extracted. In the steady-state condition, the results are reported. The important parameters were the drag force acting on the weir, the flow rate and the water level. Additionally, ANSYS Fluent reports drag force as 4.55N & outlet mass flow rate as 0.557 kg/s.
The plots below indicate the water level on the lines in the entrance zone (1 meter from the inlet) and at the middle of the weir (1.67m from the inlet).
Height-Volume Fraction of Water 1meter away from the inlet
Height-Volume Fraction of Water 1.67meter away from the inlet
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