Visualization of Submerged Cavitating Jet: Part Two – Influences of Hydrodynamic Conditions, Nozzle Geometry and Visualization System Arrangement

In visualization results of highly-submerged cavitating water jet obtained by a digital camera, the influence of parameters such as: injection pressure, nozzle diameter and geometry, nozzle mounting (for convergent / divergent flow), cavitation number and exit jet velocity, were investigated. In addition, the influence of visualization system position was studied. All the parameters have been found to be of strong influence on the jet appearance and performance

Visualization of Submerged Cavitating Jet: Part One –The Phenomenon,Time-Synchronization, Photo Objectives and Sono-Luminescence

In order to study the jet structure and the behavior of cloud cavitation within time and space, visualization of highly submerged cavitating water jet has been done using 4-Quik-05 camera. This included obligatory synchronization technique and several types of lenses. The influencing parameters, such as: injection pressure, downstream pressure and cavitation number were experimentally proven to be very significant. The recordings of sono-luminescence phenomenon proved the bubble collapse everywhere along the jet trajectory. In addition, the effect of temperature on sono-luminescence was investigated