computational fluid dynamics

CFD analysis of Flat plate in a cylindrical Test SectionSuraj SinghMAE-5150

Geometry

• Geometry was built and meshed in gambit

• Flat plate is enclosed by a rectangular and cylindrical volume.

• O-Grid mesh created.

Geometry of Test section and Flat plate

Flat plateTest Section

Flat plate Mesh

Flat plate

Fluent Analysis

• Inlet velocity of M=0.2

• Aluminum is used as flat plate material

• K-epsilon was used as the viscous Model

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

Scaled Residuals Plot

Pressure at Leading edge

• The pressure is max at the leading edge because the leading edge is the stagnation point of the flat plate.

Pressure(pa)

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

Pressure on Top of the flat plate

• Top surface has high pressure compared to the bottom surface

Pressure(pa)

Isometric Surface view of Static Pressure

Stagnation Point

Pressure(pa)

Isometric surface view of Velocity

• No slip boundary condition on the plate

Velocity (m/s)

Velocity profile

Particle velocity

• Boundary layer on the flat plate reduces the velocity over it

Velocity (m/s)

Turbulence Profile

• Turbulence is low as the Mach number is less than 0.3

Turbulent Kinetic Energy (m2/s2)

Turbulence Profile

Future Additional Analysis

• Calculating data in a transient condition

• Determine species reactions on flat plate