Evolution of a five-hole probe calibration near a wall

Abstract Five-hole probes (5HP) are a common tool for measurements of the velocity in turbomachinery studies. In those applications, spaces confined, which drives to get close walls. The proximity wall affects behavior 5HP. wall-related evolution calibration two hemispheric L-shaped 3D printed five-hole is investigated low speed wind tunnel. 2D Particle Image Velocimetry (PIV) and pressure were carried out. causes probe measure that flow goes away from whereas boundary layer feel direction towards wall.