Multiple orifices is a new type of dissipator in flood discharge tunnels, it is better for energy dissioation. We have conducted the tests of cavitation of orifice on the hydraulic model and prototype. The cavitation ...Multiple orifices is a new type of dissipator in flood discharge tunnels, it is better for energy dissioation. We have conducted the tests of cavitation of orifice on the hydraulic model and prototype. The cavitation characteristics and the measures for preventing orifices free from cavitation are given. The ef- fects of air content and size scale on cavitation incipience are analysed. The relationship between cavitation and fluctuating pressure of turbulence is examined and the design standard on cavitation of orifices is described.展开更多
文摘Multiple orifices is a new type of dissipator in flood discharge tunnels, it is better for energy dissioation. We have conducted the tests of cavitation of orifice on the hydraulic model and prototype. The cavitation characteristics and the measures for preventing orifices free from cavitation are given. The ef- fects of air content and size scale on cavitation incipience are analysed. The relationship between cavitation and fluctuating pressure of turbulence is examined and the design standard on cavitation of orifices is described.
