Experimental Investigation of Submerged Waterjet Flow Field Using Low-Cost Particle Imaging Velocimetry Technique

In this experiment, it has been attempted to simulate the velocity field of a submerged waterjet and explore its characteristics using the particle imaging velocimetry technique (PIV). A smartphone has been used for recording in this experiment. The basis of this experiment is imaging a given cross-section of the fluid field. A dark room has been embedded around the reservoir and a 532nm laser with 100mW power and a lens with a known focal distance has been used to create a light sheet inside the reservoir. PVC resin particles have been used as tracing particles. After filming the cross-section, a source code is used for image processing to extract flow field characteristics such as velocity magnitude, velocity vectors, and streamlines. The results show that axial mean velocity gradually decreases after a specified distance which is conformed to Iguchi’s experiments. Also, the change in radial velocity and velocity profiles can be compared to Qu and Chanson’s experiments.

Experimental Investigation of Submerged Waterjet Flow Field Using Low-Cost Particle Imaging Velocimetry Technique Keywords:

PIV , Image processing , Laser , Velocity