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Title: Numerical and Experimental Investigations on the Shape and Roughness of Cylindrical Critical Flow Venturi Nozzles (CFVN)
Author: Marc Antoine Lambert Remy Maury Alain Strzelecki Jean Christophe Valire Eric Foucault Guillaume Lehnasch Bodo Mickan Ernst von Lavante
Source: 2018 International Symposium on Fluid Flow Measurement
Year Published: 2018
Abstract: As natural gas is a rapidly growing resource in the global energy supply (considering its thermal efficiency and as a clean energy), the accuracy of energy transfer measurements becomes essential. For decades all over the world, gas flow meters have been calibrated by means of CFVNs. The calibrating method of gas flow meters with CFVNs is well established for low and medium pressures, as the corresponding Reynolds number is well within the scope of the ISO 9300 standard 1, and it delivers a CD (discharge coefficient) curve for each CFVN.

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