Structure of Separation Flow Past a Cylindrical Cavity in the Wall of a Plane Channel

The results of an experimental investigation of subsonic turbulent flow past a lengthy cavity in a flat plate or the wall of a plane-parallel channel are presented. The cavity represents a cylindrical trench of finite span with rounded spherical ends. The pressure coefficient distributions are obtained and the streamline patterns on the cavity surface are visualized for different angles of inclination of its longitudinal axis to the oncoming flow. The effect of these parameters on the intensity of separated swirl flow in the cavity is discussed.