The Reynolds number based on the chord length is a dimensionless parameter used in aerodynamics to characterize the flow regime over an airfoil or wing. It relates the relative importance of inertial forces to viscous forces within the fluid as it flows over the surface of the airfoil.
- Rec: Reynolds number based on the chord length
- ρ∞: Density of the freestream flow
- V∞: Freestream velocity
- c: Chord length of the airfoil
- μ∞: Dynamic viscosity of the freestream flow