Experimental investigation of a cavitating Venturi and its application to flow metering

An experimental investigation has been carried out to evaluate the performance of a cavitating Venturi flow. For that purpose, closed loop circuit with centrifugal pump and transparent asymmetric converging-diverging test section built which allows set pressure level flow rate. The system is instrumented several sensors temperature probes are continuously monitored during tests. experiments have consisted in generating non-cavitating flows inside under controlled conditions. obtained results, characterized as function Venturi's discharge coefficient, ratio loss good agreement previous studies standard geometries, specially flows. cavitation found be dependent on inlet similar chocked condition constant volumetric On basis these observations analogous behaviour compressible gas nozzles, new coefficient derived remains at any regime. Thus, this permits use meter