The Pressure Coefficient over the lower surface, denoted as , specifically refers to the pressure coefficient on the lower surface of the flat plate. The pressure coefficient () is a dimensionless parameter used in aerodynamics to describe how the local pressure at a specific point on the surface deviates from the freestream pressure. It quantifies whether the local pressure is higher or lower than the freestream pressure.
- Pressure coefficient over the lower surface (Cp,l)
- Angle of attack (𝛼) in rad
- Freestream Mach number (M∞)