Abstract
A discrete vortex model is introduced in the calculation of the starting flows around a two-dimensional elliptic airfoil oscillating in pitch at large incidences. The potential flow past an obstacle is represented by a fixed number of bound vortices distributed along the airfoil surface and the viscous wake by an increasing number of free vortices, which are shed from the leading and trailing edges with a regular time interval and convected downstream under the action of the free stream velocity and the vortex-induced velocity. Every time stage of the calculated wake is visualized by means of point vortex plots and of streamline tracings. Some comparison is made with the streamline profiles originating from the visualization experiment.
