Edge singularities and kutta condition in 3D aerodynamics

This review paper presents a unified formulation of the Kutta condition for steady and unsteady flows, implemented by removing all unbounded velocity singularities (of power-law and logarithmic type) at the trailing edge, and including nonlinear wakes and thick swept-back wings. A suitable boundary integral approach is adopted and the uniqueness issue is discussed for several wing configurations of interest in aerodynamics