Compact installations for differential flowmeters

Laws, E.M.; Ouazanne, A.K.

doi:10.1016/0955-5986(94)90040-x

Cited by 16 publications

(9 citation statements)

References 4 publications

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“…In the early 1990s, the effect of flow conditioner location on the orifice meter discharge coefficient was investigated (Morrison, DeOtte and Beam, 1992;Brennan et al, 1991;Gajan et al, 1991). These studies, in addition to the extensive research reported in Quazzane (1995) and Laws and Quazzane (1994), have found that developing flow causes higher pressure drop across the orifice plate than fully developed flow, hence, the function of flow conditioner becomes essential. Laws and Quazzane studied the effect of Zanker plate thickness on the temporal mean velocity and axial turbulent intensity (Laws and Quazzane, 1994).…”

Section: Literature Reviewmentioning

confidence: 91%

“…These studies, in addition to the extensive research reported in Quazzane (1995) and Laws and Quazzane (1994), have found that developing flow causes higher pressure drop across the orifice plate than fully developed flow, hence, the function of flow conditioner becomes essential. Laws and Quazzane studied the effect of Zanker plate thickness on the temporal mean velocity and axial turbulent intensity (Laws and Quazzane, 1994). They included the honeycomb explained in ISO 5167 standard in their experiments.…”

Section: Literature Reviewmentioning

confidence: 91%

See 1 more Smart Citation

CFD Analysis of Incompressible Turbulent Swirling Flow through Zanker Plate

Drainy¹,

Saqr

Aly³

et al. 2009

Engineering Applications of Computational Fluid Mechanics

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Zanker plate is a widely used flow straightener to eliminate turbulence originating from pipe fittings in experimental fluid flow applications. In this paper, steady state, incompressible, swirling turbulent flow through Zanker plate has been studied. The solution and the analysis were carried out using finite volume CFD solver FLUENT 6.2. Five turbulence models were used in the numerical investigation and their results were compared with the pressure drop correlation of BS EN ISO 5167-2:2003. The turbulence models investigated here are the standard k-ε, realizable k-ε, the Reynolds Stress Model (RSM), the large Eddy Simulation (LES), and the Detached Eddy Simulation (DES). The results showed that the DES model gave the best agreement with the ISO pressure drop correlation, therefore, the model was used further to predict streamline patterns, vortex formations and separated flow regions. The effects of Zanker plate thickness and Reynolds number on the flow characteristics have been investigated as well.

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Section: Literature Reviewmentioning

confidence: 91%

Section: Literature Reviewmentioning

confidence: 91%

CFD Analysis of Incompressible Turbulent Swirling Flow through Zanker Plate

Drainy¹,

Saqr

Aly³

et al. 2009

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

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“…[26][27][28][29] Basing on the stability estimation above, in the calculation of the rectification evaluation index L, the basic idea dichotomy is adopted. As shown in equations (5) and (6), by n times calculations, to identify whether the velocity of the cross section L n is stable, for L n satisfying equation (6) is supposed to be required result L min…”

Section: Gasotron Effect Evaluationmentioning

confidence: 99%

“…As a consequence, when more than one influencing factor occurs at the same time, sometimes, the orifice flow meter’s discharge coefficient decreases. 5 In terms of the asymmetry of velocity distribution, vortex, and turbulent structure, the effect of each flow-distortion factor on flow meter measurement has been studied by many scholars. For example, Morrison tested the influence of different inflow velocity distributions on the outflow coefficient C d of the orifice flow meter.…”

Section: Introductionmentioning

confidence: 99%

Performance optimization of ultrasonic flow meter based on computational fluid dynamics

Peng

Liao

Tan

2018

Advances in Mechanical Engineering

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As a common nature gas measuring tool, ultrasonic flow meter is more and more put into use. Therefore, the accuracy of measurement is what we concern the most. The performance of ultrasonic flow meter is closely related to fluid state which flows through it. This article identified the evaluation method of rectification effect of gasotron and its implementation steps. It proposed an assessing index L min based on dichotomy. Computational fluid dynamics method is used to simulate the model of an upstream straight pipe section with a header and plate gasotron, which obtained the assessing index L min in five different transmission conditions. Finally, the feasibility of the gasotron is validated against comparing indication errors in different installation conditions: with a header, benchmark, with a header and gasotron.

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“…A fundamental understanding of the approaching velocity profiles and their effects on the discharge coefficient of the metering device is essential knowledge for the rational design of a flow conditioner-meter package that minims installation effects. Research work in the USA (Morrison et al, 1992;Brennan et al, 1991), in the UK (Reader-Harris and Keegans, 1986;Ouazzane, 1995;Ouazzane and Laws, 1997;Laws and Ouazzane, 1994), and in France (Gajan et al, 1991) has reported a number of experimental and computational studies of installation effects on orifice flowmeter performance. Most of these studies investigated the effect on the discharge coefficient of flow conditioner location with respect to the orifice meter.…”

Section: Introductionmentioning

confidence: 99%

Flow conditioners design and their effects in reducing flow metering errors

Ouazzane

Benhadj

2002

Sensor Review

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The sensitivity of differential-pressure flow meters to the quality of the approaching flow continues to be a cause for concern to flow meter manufacturers and users. Distortions to the approaching velocity profiles generated by pipe fittings and installations located upstream of a flow meter, can lead to considerable errors in flow metering. This cannot be ignored because of the likely cost and process efficiency implications. This paper describes the effects of various entrance flow velocity profiles on the performance of an orifice flow meter with and without flow conditioning. Asymmetric swirling velocity profiles were generated by a ball valve. These caused significant shifts to the meter's calibration. The use of a vaned-plate flow conditioner, consisting of six vanes attached to a 70 per cent porosity plate, greatly improved the performance of the meter. Thus, the device can be used as part of a flow metering package that will have considerably reduced installation lengths. The less-sophisticated NEL plate proved to be a good flow straightener, i.e. a good swirl remover, but was not an efficient flow conditioner.

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Compact installations for differential flowmeters

Cited by 16 publications

References 4 publications

CFD Analysis of Incompressible Turbulent Swirling Flow through Zanker Plate

CFD Analysis of Incompressible Turbulent Swirling Flow through Zanker Plate

Performance optimization of ultrasonic flow meter based on computational fluid dynamics

Flow conditioners design and their effects in reducing flow metering errors

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