CAVITATING JET PERFORMANCE ESTIMATION METHOD AND CAVITATING JET PERFORMANCE ESTIMATION DEVICE, CAVITATING JET ESTIMATION ERROR CALCULATION METHOD AND CAVITATING JET ESTIMATION ERROR CALCULATION DEVICE, CAVITATING JET PERFORMANCE EVALUATION METHOD AND CAVITATING JET PERFORMANCE EVALUATION DEVICE AND CAVITATING JET PERFORMANCE CALCULATION FORMULA SPECIFICATION DEVICE

摘要

Equation (1) for calculating estimated cavitating jet performance E is set, a power index n(σ) of a term xn(σ) relating to a power law of an injection pressure p1 of a cavitating jet and a power index m(σ) of a term ym(σ) relating to a power law of a nozzle diameter d for producing the cavitating jet in Equation (1) are specified from data on the injection pressure p1, the nozzle diameter d and a cavitation number σ and data on cavitating jet performance ERmax corresponding to these pieces of data, and the estimated cavitating jet performance E is obtained using the data on the injection pressure p1, the nozzle diameter d and the cavitation number σ, the Equation (1) and the functions n(σ), m(σ) for the specified power indices.

主权项

1. A cavitating jet performance estimation method, comprising:
in obtaining estimated cavitating jet performance E of a cavitating jet, setting the following Equation (1) for calculating the estimated cavitating jet performance E,
[Equation 1]E=FXn(σ)Ym(σ)  (1)(In Equation (1), F denotes a term relating to the effect of a cavitation number σ of the cavitating jet, Xn(σ) denotes a term relating to a power law of an injection pressure p1 of the cavitating jet and a power index n(σ) thereof denotes a function of the cavitation number σ, and Ym(σ) denotes a term relating to a power law of a nozzle diameter d for producing the cavitating jet and a power index m(σ) thereof denotes a function of the cavitation number σ); specifying the functions n(σ), m(σ) for the power indices in the Equation (1) from data on the injection pressure p1, the nozzle diameter d and the cavitation number σ and data on cavitating jet performance ERmax corresponding to these pieces of data; and obtaining the estimated cavitating jet performance E using the data on the injection pressure p1, the nozzle diameter d and the cavitation number σ, the Equation (1) and the specified functions n(σ), m(σ) for the power indices.