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Title: Generalized Wet Gas Venturi Meter Correlations: Assessment and Improvement
Author: Martin Bjrnera Philip Fosblb Mads Lisberga Henrik Lisberga
Source: 2017 North Sea Flow Measurement Workshop
Year Published: 2017
Abstract: The venturi meter is perhaps the most suitable device for gas flow measurements in wet gas streams. As the presence of liquid in the venturi meter increases the differential pressure, a correction term is required to determine the actual gas flow. In this work we assess the associated error of six common wet gas correlations, against experimental venturi meter data from the literature. The results indicate that the Reader-Harris Graham correlation has the smallest deviations from experimental data. At low -ratios (?? ??/??) the de Leeuw correlation achieves similar deviations, but the errors become considerable at high -ratios. The de Leeuw correlation is improved for application with arbitrary -values. A correction term is suggested, to reduce the observed bias at low Lockhart-Martinelli values. Finally, it is shown that the function for n in the Reader-Harris Graham correlation can be approximated by a de Leeuw type correlation with a -dependency.

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