抄録
Recently, particle laden high speed jet flow is used widely for fine machining of brittle material. However, the machining characteristics, particularly the flow characteristics of particle laden high speed jet flow are not well understood because of its complexity. In this study, the flow characteristics of particle laden high speed free jet flow issued from a jet machining round nozzle are examined experimentally by PIV measurement for various mass loading ratio and supplied air pressure. Major results are (1) the particle velocity increases with increasing supplied air pressure and decreasing of mass loading ratio, (2) the spread of particle increases with increasing mass loading ratio and decreasing supplied air pressure, (3) the spread width of particle laden jet flow to the downstream can be expressed by a linear function, and (4) the particle velocity profile on the jet-centerline can be divided into three regions.
