Efficiency Measurement of Water Jet Orifices by a Novel Electro-Optical Technique

The problem of the efficiency evaluation of water jet nozzles has been dealt in the present work and a novel laser Doppler velocimetry (LDV) technique has been proposed in order to acquire high speed water velocity at the exit of the cutting head nozzles. A standard LDV technique has been implemented for the first experimental trials with the aim of validating the analytical results with directly measured velocity values. The novel LDV technique has been proposed outlying of the critical aspects to be taken into account for future developments and improvements in measurement dynamic range, resolution, and accuracy