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The paper concerns with the relationship between cavitation inception and Sound Pressure Level (SPL). A case study for the Xiaolangdi Hydro-project was taken as a typical example, which demonstrated the standard criterion of SPL indicating cavitation inception. Cavitation inception of an orifice plate used for energy dissipation in a tunnel spillway was witnessed and verified both in model test and prototype observation. A design criterion was proposed for a cavitation-free hydraulic structure which can be served as a reference for designers as well as researchers. Consequently, scale effects were discussed with an aim at suggesting an appropriate factor of safety in design.
The paper concerns with the relationship between cavitation inception and Sound Pressure Level (SPL). A case study for the Xiaolangdi Hydro-project was taken as a typical example, which demonstrated the standard criterion of SPL indicative cavitation inception. Cavitation inception of an orifice plate used for energy dissipation in a tunnel spillway was witnessed and verified both in model test and prototype observation. A design criterion was proposed for a cavitation-free hydraulic structure which can be served as a reference for designers as well as researchers. were discussed with an aim at suggesting an appropriate factor of safety in design.