Flow over an airfoil

Objective: To demonstrate the flow simulation over an E-423 airfoil at a different angle of attacks (0,2,4)

Procedure:

• Download the sample airfoil data
• Convert the spline into a sketch using the convert entities button and then join the two open ends of the spline at the tail end of the airfoil using a line
• Then we rotate the airfoil according to the different angle of attacks (0,2,4,6,8,10) using the move entities button
• Then we extrude the airfoil (in this case i have extruded to 0.2 metres)
• Build up the basic mesh and build a local mesh at the surface of the airfoil as the basic mesh is not a body-fitted mesh
• Then using the flow wizard set the flow as an external flow and a transient analysis (Time-dependent), the fluid used is air having a density of 1.225 kg/m^3 and velocity of air in x-direction was given as 600 m/s
• Then run the simulation
• Then create a cut plot to get the velocity profile
• Then using the goal from the insert data tree get the results for global goal and surface goal i.e, lift force and drag force

• At 2 degree angle of Attack:

• At 4 degree Angle of Attack: