👉 Vorticity, also known as vortensity or vortex density, is a quantity that describes how much rotational motion occurs in fluid. It can be defined as the ratio of the tangential velocity to its radial velocity at any point within an object. In simpler terms, vorticity is a measure of how the fluid is rotating and moving around the object. The higher the vorticity, the more rotation or movement there is in the fluid. Vorticity can be calculated using the formula