Circulation (fluid dynamics) Guide, Meaning , Facts, Information and Description
In fluid dynamics, circulation is the path integral around a closed curve of the fluid velocity. Circulation is normally denoted . If is the fluid velocity and the closed curve is denoted
For a body in an inviscid flow field, lift is equal to the product of the circulation about the body, the air density, and the velocity. Circulation is often used in computational fluid dynamics as an intermediate variable to calculate forces on an airfoil or other body.
Circulation is highly related to vorticity. By Stokes' theorem:
Circulation was first used independently by Frederick Lanchester, Wilhelm Kutta, and Nikolai Joukowski.
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