CFD simulation of dual-cavity self-resonating cavitating nozzle

Cavitation jets can produce higher-pulsed jets by utilizing the energy produced by cavitation collapse. Based on an organ pipe nozzle with a second-stage resonant cavity in series to form a dual cavity, the flow properties and cavitation of this nozzle are investigated using CFD methods. Through the use of mass flow rates, cavitation numbers, and upstream and downstream pressures, the cavitation effects are examined in the simulations. There are different nozzle structures in the dual resonant cavity in terms of cavity length ratio, cavity diameter ratio, and expansion angle. To determine the appropriate size, cavitation effects are analyzed and compared. According to studies, the cavitation effects can alter whether the resonant cavity size is too large or too small. The ideal cavitation nozzle size for the dual-cavity nozzle utilized in this example has a resonant cavity length ratio of 0.96 and a cavity diameter ratio of 3, all of which are conducive to increasing cavitation and jet effect.