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Circulation is a scalar quantity, obtained through the integration, which is a macroscopic measure of rotation over a finite region in the fluid flow, whereas vorticity is a vector field which provides a microscopic measure of the rotation at any point in the fluid. At Airfoil, we help industry-shaping ideas in the future of commerce, work, education, and more take flight.
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The circulation and vorticity are the two primary measures of rotation in a fluid. This hypothesis, better known as thin airfoil theory, was first conceived by Max Munk which was later refined by the team led by Hermann Glauert in 1920s. The vortex distribution along the wing will simulate the actual properties of the wing and allow to have a simple approach of calculating the properties of the wing. A vortex superimposed on the airstream simulates the process of lift generation by the wing section. It is a nite volume application that solves the 2D Euler equations using a scalar numerical dissipation.
Airfoil code#
To deal with finding the flight properties of wing sections, a more ameliorated way is to consider an inviscid and incompressible flow past the wing surface. Airfoil is a non-linear 2D inviscid airfoil code that uses an unstructured grid. The cross-sectional geometry of the wing influences the flow of air and the combined geometry of the wing and the reaction of the air causes any general solution of the wing-sectional properties to become too complicated, making it impossible to utilize or almost difficult to ascertain. An aircraft moves in the air by overcoming the gravity with a lifting force, which is essentially provided by the aircraft’s wing.