Experimental study of horseshoe vortex in the corner region of a linear compressor cascade

The paper presents the results of an experimental investigation at low speed in the corner region of a linear compressor cascade. The measurements were carried out in the large-size wind tunnel at speed of 9 m/s. Mean velocities were measured by using a three-dimensional laser Doppler velocimeter. The measurements have revealed the horseshoe vortex structure and have permitted to determine the global structure of the flow around the leading edge of the blade. The actual incident angle of flow near the endwall were different with experimental condition due to the secondary flow which the velocity profile were skewed. At various incident angle of flow condition below this influence also different.