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 results for Static Pressure contours and Velocity Vectors for 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
The gallery below shows results for Static Pressure contours and Velocity Vectors for 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
|
|
|
|
|
Strain Rate Contour - Fine Mesh
|
Velocity profiles for a horizontal line at the middle of each baffle - Mesh Sensitivity Analysis
|
Pressure Coefficient for a Horizontal Line at the middle of each baffel - Mesh Sensitivity Analysis
|
Contours of Pressure - Single Baffle Straight Bend
|
|
|
|
|
|
Velocity Vectors - Single Baffle Straight Bend
|
Velocity Vectors - Single Baffle Straight Bend
|
Pressure Contours - Two Baffles Straight Bends
|
Velocity Vectors - Two Baffles Straight Bends Zoom
|
|
|
|
|
|
Velocity Vectors - Two Baffles Straight Bends
|
Pressure Contours - Two Baffles Round Bends
|
Velocity Vectors - Two Baffles Round Bends Zoom
|
Velocity Vectors - Two Baffles Round Bends
|
|
|
||
|
Contours of Pressure - Single Baffle Round Bend
|
Velocity Vectors - Single Baffle Round bend
|