Flow across a flat plate.

1. CFD analysis of Flat plate in a cylindrical Test Section
Suraj Singh
MAE-5150

2. Geometry
• Geometry was built and meshed in gambit
• Flat plate is enclosed by a rectangular and
cylindrical volume.
• O-Grid mesh created.

3. Geometry of Test section and Flat
plate
Flat plate
Test Section

4. Flat plate Mesh
Flat plate

5. Fluent Analysis
• Inlet velocity of M=0.2
• Aluminum is used as flat plate material
• K-epsilon was used as the viscous Model

6. Fluent Analysis
• Solved for a pressure based and steady state
Solution
• Solution converged at 980 iterations
• Static Pressure ,Velocity and Turbulence
profiles were analyzed acting on the flat plate

7. Scaled Residuals Plot

8. Pressure at Leading edge
Pressure(pa)
• The pressure is max at the leading edge
because the leading edge is the stagnation
point of the flat plate.

9. Pressure on bottom Surface
• The geometry of the plate causes more deflection of air
towards the bottom surface
• This creates high velocity on the bottom surface and
subsequently low pressure on bottom surface

10. Pressure on Top of the flat plate
Pressure(pa)
• Top surface has high pressure compared to the bottom
surface

11. Isometric Surface view of Static Pressure
Pressure(pa)
Stagnation Point

12. Isometric surface view of Velocity
Velocity (m/s)
• No slip boundary condition on the plate

13. Velocity profile

14. Particle velocity
Velocity (m/s)
• Boundary layer on the flat plate reduces the velocity over it

15. Turbulence Profile
Turbulent Kinetic Energy (m2/s2)
• Turbulence is low as the Mach number is less than 0.3

16. Turbulence Profile

17. Future Additional Analysis
• Calculating data in a transient condition
• Determine species reactions on flat plate