Single Baffle
Simulation Models were created to compare the flow for two geometries:
- Single baffle with sharp corners
- Single baffle with round corners
The gallery below shows
CFD Results
180 Degree turn over a single baffle
- Single 180 Degree bend with sharp corners
Below are the results for Static Pressure contours and Velocity Vectors for this geometry:
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these geometries.
Two Baffles
Simulation Models were created to compare the flow for two geometries:
- Two baffles with sharp corners
- Two baffles with round corners
Below are the The gallery below shows results for Static Pressure contours and Velocity Vectors for this geometry:
As it is expected the pressure drop is larger for the case of straight corners.
180 Degree turn over two baffles
these geometries.
Mesh Refinement
A standard outlet pressure was set for the Double Baffle Straight Edge geometry for validation. Also a Mesh Sensitivity analysis was performed. The Mesh was refined from 3,663 cells to 14,652 cells to 58,608 cells. Results are plotted for a straight horizontal line at the middle of each baffle. These results are for Velocity Magnitude and Pressure Coefficient. Furthermore a contour of the strain rate was created to show shear velocity gradients around the 180 degree bend.
These results will be further validated by:
- Comparing the results with a simulation using different momentum discretization method: From 'first order upwind' to 'second order upwind'
- Comparing the results with a simulation using a different viscous turbulent model: From 'k-epsilon standard' to 'k-epsilon realizable' to 'k-omega'. Also vary the Near Wall Treatment: from 'Standard Wall Functions' to 'Enhanced Wall treatment'
- Comparing Simulation results to experimental data
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