LASER OBSERVATION ON THE INNER FLOW STRUCTURE OF WATER JETS(Water Jet)

Abstract

To make clear the structure of the straight-water jets (STWJ, or plain-water jets), the axial and radial distributions of the STWJ were measured by using a laser-doppler-velocimeter (LDV). Abrasive-water suspension jets (AWSJ) velocity was also examined experimentally and compared with the STWJ velocity. Experimental data showed that the average AWSJ velocity exceeded the average STWJ velocity in the range of the diffused flow region far from the nozzle.