Análise do Escoamento em Torno de um Cilindro Girante

Abstract

The two-dimensional, incompressible, laminar and steady flow past a rotating cylinder is analyzed through the numerical solution of the full Navier-Stokes equations. The Galerkin weighted residuals approach, solved by the finite element method and based on the Taylor and Hughes Model, is used to determine the pressure, the velocity and the vorticity field.
The Magnus lift coefficient and the drag coefficient are evaluated for a flow with Reynolds number, based on the cylinder radius, of 10 and for tangential speeds, nondimensionalised with respect to the free - stream velocity, of 0.0, 0.5 and 1.0. The unbalancing of the pressure field, caused by the friction of the rotating cylinder surface on the viscous fluid, is the main responsable for the resulting Magnus lift.