An investigation of two-phase flow measurement with orifices for low-quality mixtures

Zhang, H.J.; Lu, Shu‐Ling; Yu, Ge-Ping

doi:10.1016/0301-9322(92)90013-7

Cited by 30 publications

(20 citation statements)

References 4 publications

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“…According to [5,12], for low quality gas-liquid flows (considering x < 1%), C d,TP is a function of the Reynolds number for the liquid flow, Re D,l . According to ISO 5167-1, the discharge coefficient for the applied meters, venturi and orifice plate with corner taps, can be approximated to the constants 0.98 and 0.61, respectively, for Re D,l > 30,000.…”

Section: Methodsmentioning

confidence: 99%

“…Based on the single-phase flow equation, a mechanical method to predict flow rates was used, implementing semi-empirical twophase flow correlations found in the literature for low quality flows. To take into account the two-phase flow occurrence, Zhang et al [5] suggested the introduction of the K L parameter into Eq. (1) to summarize the necessary corrections for correlating the twophase mass flow rate, m TP , to the two-phase pressure drop, Dp TP ,…”

Section: Literature Reviewmentioning

confidence: 99%

“…In sequence, the homogeneous model and the correlations of [5,7,10] are presented below. All of them are given in the form proposed by Ref.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Zhang et al [5] researched low quality (x < 1%) air-water flow through orifice plates. These authors proposed a correlation to obtain the two-phase mass flow rate as defined by…”

Section: Zhang Et Al [5]mentioning

confidence: 99%

“…It is common to find differential pressure devices associated with other kinds of meters, such as void fraction sensors. Recently, gas-liquid flow research by means of a differential pressure device and a void fraction sensor has been reported in [5][6][7]. Zhang et al [5] measured air-water mass flow rates with orifice and void fraction meters, Moura and Marvillet [6] measured refrigerant R-134a liquid-vapor mass flow rates with venturi and void fraction meters and Zhang et al [7] developed correlations for measuring oil-gas mass flow rates through venturi and using electrical capacitance tomography.…”

Section: Introductionmentioning

confidence: 99%

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Methods and Instruments for Measuring the Rate of Liquids and Gases: Prospects of Application of Ultrasonic Transducers with a Wide Measuring Beam

Хлебнова¹

2016

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a b s t r a c tTwo-phase flow measurements were carried out using a resistive void fraction meter coupled to a venturi or orifice plate. The measurement system used to estimate the liquid and gas mass flow rates was evaluated using an air-water experimental facility. Experiments included upward vertical and horizontal flow, annular, bubbly, churn and slug patterns, void fraction ranging from 2% to 85%, water flow rate up to 4000 kg/h, air flow rate up to 50 kg/h, and quality up to almost 10%. The fractional root mean square (RMS) deviation of the two-phase mass flow rate in upward vertical flow through a venturi plate is 6.8% using the correlation of Chisholm (D. Chisholm, Pressure gradients during the flow of incompressible two-phase mixtures through pipes, venturis and orifice plates, British Chemical Engineering 12 (9) (1967) 454-457). For the orifice plate, the RMS deviation of the vertical flow is 5.5% using the correlation of Zhang et al. (H.J. Zhang, W.T. Yue, Z.Y. Huang, Investigation of oil-air two-phase mass flow rate measurement using venturi and void fraction sensor, Journal of Zhejiang University Science 6A (6) (2005) 601-606). The results show that the flow direction has no significant influence on the meters in relation to the pressure drop in the experimental operation range. Quality and slip ratio analyses were also performed. The results show a mean slip ratio lower than 1.1, when bubbly and slug flow patterns are encountered for mean void fractions lower than 70%.

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Section: Methodsmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

“…In sequence, the homogeneous model and the correlations of [5,7,10] are presented below. All of them are given in the form proposed by Ref.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Zhang et al [5] researched low quality (x < 1%) air-water flow through orifice plates. These authors proposed a correlation to obtain the two-phase mass flow rate as defined by…”

Section: Zhang Et Al [5]mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations