The air flow around a milling cutter investigated experimentally by particle image velocimetry

The movement of air around a rotating milling cutter is investigated experimentally by using the optical non-intrusive method PIV (Particle Image Velocimetry). located next to flat surface simulating processed material. Flow studied in three planes axial × radial direction with phases 90°, 180° and 270° from point closest desk. timing has been synchronized rotation. We observed plumes governed centrifugal force (as Taylor-Couette flow) acting on teared cutter. In average, flows along its front end forming large-scale vortex mostly apparent at higher velocity plane opposite surface. At 90°plane, sucked towards cutter, while 270°plane, pushed away it. Spatial correlation function shows weak periodicity close widening shape increasing distance