• Enter the Yaw Angle. Yaw is the yaw of the incoming freestream velocity. For positive yaw, the freestream is coming from the vehicle's right side and negative yaw is coming from the vehicle's left side. The Yaw inout is in degree units.
• Enter the Speed. Speed is the incoming velocity impacting the vehicle. The unit is meter per second.
• Turn on or off Skirt. A generic skirt could be used in your simulation

Selecting Geometry

• You would only need to select aerodynamic features that you would want to run in your simulation. A standard heavy truck geometry which includes the tractor, trailer, and wheels are automatically provided in the simulation.