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Title: A new over-reading correlation for vertical Venturi tubes in wet-gas flow
Author: G. Chinello
Source: 2021 North Sea Flow Measurement Workshop
Year Published: 2021
Abstract: Venturi tubes are one of the most common types of device used for wet-gas flow measurement as they are a simple, robust, and cost-effective flow meter. The majority of research and development for Venturi tubes in wet-gas flow are for horizontal installation and there are not many over-reading correlations developed for vertical Venturi tubes in the public domain. The ISO Technical Reports for measuring wet-gas flows (ISO/TR 11583:2012 1 and ISO/TR 12748:2015 2) only cover Venturi tubes horizontally installed. Correlations developed for horizontal orientation are inappropriate for vertical installations, and their performance decrease for decreasing values of the gas Froude number with errors in gas mass flow rate exceeding 10 % 3-7. Moreover, the over-reading correlation included in ISO/TR 11583:2012 is limited to density ratio greater than 0.02 and was not extensively tested at density ratio greater than 0.1.

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