Why dos spinning the cylinder produces lift?
The friction between the fluid and the surface of the cylinder tends to drag the fluid near the surface in the same direction as the rotational motion. Superimposed on top of the usual nonspinning flow, this "extra" velocity contribution creates a higher-than-usual velocity at the top of the cylinder and a lower-than-usual velocity at the bottom. These velocities are assumed to be just outside the viscous boundary layer on the surface. From Bernoulli's equation as the velocity increases, the pressure decreases. the pressure on the top of the cylinder is lower than on the bottom, This pressure imbalance creates a net upward force, i.e., a finite lift.
How to Calculate Location of Stagnation Point Outside Cylinder for Lifting Flow?
Location of Stagnation Point Outside Cylinder for Lifting Flow calculator uses Radial Coordinate of Stagnation Point = Stagnation Vortex Strength/(4*pi*Freestream Velocity)+sqrt((Stagnation Vortex Strength/(4*pi*Freestream Velocity))^2-Cylinder Radius^2) to calculate the Radial Coordinate of Stagnation Point, Location of stagnation point outside cylinder for lifting flow formula is defined as the function of freestream velocity, vortex strength, and radius of the cylinder. Radial Coordinate of Stagnation Point is denoted by r0 symbol.
How to calculate Location of Stagnation Point Outside Cylinder for Lifting Flow using this online calculator? To use this online calculator for Location of Stagnation Point Outside Cylinder for Lifting Flow, enter Stagnation Vortex Strength (Γ0), Freestream Velocity (V∞) & Cylinder Radius (R) and hit the calculate button. Here is how the Location of Stagnation Point Outside Cylinder for Lifting Flow calculation can be explained with given input values -> 0.091569 = 7/(4*pi*6.9)+sqrt((7/(4*pi*6.9))^2-0.08^2).