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Title: Numerical And Experimental Investigation Of Flow Fields In Critical Flow Small Size Nozzles
Author: E. Von Lavante J. Allofs F. Winzosch R. Kramer B. Mickan
Source: Flomeko 2013
Year Published: 2013
Abstract: Due to their long term stability, well understood flow behaviour and very low uncertainty, standard critical flow Venturi nozzles (CFVN) are enjoying great popularity as a calibration tool and flow metering device. Their application to very small flow rates beyond the ISO 9300 Standard, however, leaves many questions unanswered. The present work aimed at detailed investigation of flow fields within CFVNs of diameters between 15 m and 80 m. The present numerical flow simulations were validated by corresponding experimental work carried out at the PTB.

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