Smoke Tunnel Flow Visualization Study on Miniature Trailing-Edge Flaps

Abstract

Flow visualization is performed in a two-dimensional smoke tunnel to investigate the flow around flat plate airfoil with miniature tailing-edge flaps. Flow along the lower surface of airfoil, separation bubble in the upsteam corner of flaps, vortex formation of the downstream of flaps and entrainment into the airfoil wake are observed in detail. The flow models for the miniature trailing-edge flaps are proposed.