Title: A CFD study of the effect of venturi geometry on high pressure wet gas metering

Authors: Kumar Perumal; Jagannathan Krishnan

Addresses: School of Engineering and Science, Curtin University, CDT 250, 98009 Miri, Sarawak, Malaysia ' Faculty of Chemical Engineering, MARA University of Technology (UiTM), 40450 Shah Alam, Selangor Darul Ehsan, Malaysia

Abstract: Venturi meter is increasingly being preferred as wet gas flow meter because of its simple construction and ease of operation. It has been found that the performance of venturi in single phase gas is very different from that of water. In this work, with a view to optimise the design, the effects of diameter, diameter ratio and convergent angle on the performance of a venturi meter for wet gas metering has been studied by CFD modelling of the high pressure wet gas flow. The performance of eight wet gas correlations for flow prediction has also been studied. Simulation results reveal that a convergent angle of 10.5 deg to be a better choice for wet gas metering. Homogeneous flow model, Steven's and De Leeuw's correlations are found to be better than the other correlations. While homogeneous flow model performs consistently, Steven's and De Leeuw's performance drops at 40 bar. [Received: March 27, 2012; Accepted: July 1, 2012].

Keywords: venturi geometry; high pressure wet gas; wet gas metering; CFD; over reading; venturi meter; optimal design; computational fluid dynamics; gas flow; flow modelling; simulation.

DOI: 10.1504/IJOGCT.2013.056101

International Journal of Oil, Gas and Coal Technology, 2013 Vol.6 No.5, pp.549 - 566

Received: 29 Mar 2012
Accepted: 01 Jul 2012
Published online: 29 Jan 2014 *

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