The principal focus of this investigation were the effect of hydrodynamic and geometrical parameters on cavitating jet dynamic power and cavitation intensity under different flow conditions. Jet performance indicators were taken to be the erosion rate of the target surface and the size of the erosion area.. In addition, flow visualization was used as an additional tool to demonstrate the effect of dynamic power on the cavitating jet characteristics. The results show that the erosion rate can be used an indicator of the strength of the impinging jet to establish a correlation between the jet power and the pertinent experimental parameters. In addition, the importance of non-dimensional standoff distance was investigated and an analytical relationship established between it and the jet intensity. These expressions are proposed for calculating the efficiency of cavitating jets.

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