What is the effect of Reynolds number on airfoil?
The higher the Reynolds number, the lesser the viscosity plays a role in the flow around the airfoil.With increasing Reynolds number the boundary layer gets thinner, which results in a lower drag. Increasing the Reynolds number also has a destabilizing effect on the boundary layer flow, which results in the transition location moving toward the leading edge, leading to a turbulent boundary layer over a longer part of the airfoil surface. The net effect is a lower drag but a smaller low-drag range of angles of attack. This implies that the maximum lift–drag ratio will increase, but that the design lift coefficient will decrease.
How to Calculate Reynolds Number for Airfoil?
Reynolds Number for Airfoil calculator uses Reynolds Number = (Density of Fluid*Flow Velocity*Chord Length of Airfoil)/Dynamic Viscosity to calculate the Reynolds Number, The Reynolds Number for airfoil is a dimensionless value that is used to determine whether the fluid is exhibiting laminar flow (R less than 2300) or turbulent flow (R greater than 4000). Reynolds Number is denoted by Re symbol.
How to calculate Reynolds Number for Airfoil using this online calculator? To use this online calculator for Reynolds Number for Airfoil, enter Density of Fluid (ρ_{f}), Flow Velocity (V_{flow}), Chord Length of Airfoil (c) & Dynamic Viscosity (μ) and hit the calculate button. Here is how the Reynolds Number for Airfoil calculation can be explained with given input values -> 3000 = (170.194007*39.95440334*0.45)/1.02.