Multiphase flow measurements using coupled slotted orifice plate and swirl flow meter

Pirouzpanah, Sahand; Çevik, Muhammet; Morrison, Gerald L.

doi:10.1016/j.flowmeasinst.2014.09.005

Cited by 26 publications

(8 citation statements)

References 15 publications

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“…In the recent years, the multiphase fluid measurement has attracted many researchers, and many studies have been conducted on different aspects and applications of it. Some researchers have used single phase conventional technologies to measure multiphase flow rate [1,2,3,4], but due to the strong dependence of flow measurement on the composition and flow characteristics in two-phase fluids, these methods have a high level of measurement uncertainty. Some papers review different instruments, measurement strategies and principle technologies introduced until now and describes some methods such as inferential approach, phase separation, Microwave attenuation, Impedance method, gamma attenuation, cross-correlation method for measuring the velocity and phase fraction in multiphase flow in pipeline [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Computational method for multiphase flow characterization in the gas refinery

Farahani

Montazeri

2020

Heliyon

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This paper presents a new computational method for the decentralized multiphase flow measurement based on the interconnections between the two subsystems to precisely estimate the states of the multiphase flow at the gas refinery. The states of the condensate and gas sub-systems were separately estimated using the Differential Mean Value Theorem by considering the relationship between two subsystems, designing an observer and converting the conditions to linear matrix inequality. To check the stability and performance of the system against the changes, the Lyapunov theory has been used. The states behavior investigated with and without disturbance in the system output and dynamics. Additionally, the Unscented Kalman Filter based on the simplified drift flux model was used to estimate the states. It is found that both observers are capable to identify the states with some differences in performance and drift flux model is sufficient for estimation of parameters and states.

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Section: Introductionmentioning

confidence: 99%

Computational method for multiphase flow characterization in the gas refinery

Farahani

Montazeri

2020

Heliyon

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“…As separation needs high-cost equipment, researchers are highly interested in measurement systems requiring no separation. Some researchers have used single-phase conventional technologies to measure multiphase flow rate (Johnson Stuart and Mark, 1995; Pirouzpanah et al, 2014; Wenran and Yunxian, 1995); however, due to the strong dependence of the flow measurement on the composition and flow characteristics, these systems have a high level of measurement uncertainty for two-phase fluids.…”

Section: Introductionmentioning

confidence: 99%

Multi-phase flow measurement in a gas refinery using decentralized Lyapunov–based adaptive observer

Farahani

Montazeri

2020

Transactions of the Institute of Measurement and Control

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This paper presents a new Lyapunov-based nonlinear adaptive observer and joint unscented Kalman filter to precisely estimate the states and the parameters for the low-order lumped model of the multi-phase flow at the gas refinery. The main focus of the study is to estimate the discharge coefficient of the orifice meter installed on the interconnection lines of the subsystems (parameters) and the total oil and gas mass flows (states). The adaptive estimation is conducted using the real-time measurements including choke pressure, bottom line pressure, single-phase gas flow, and single-phase liquid flow in the refinery outlet. To check the stability and performance of the system against changes, the Lyapunov theory has been used. In all stages, the investigations were based on the data collected from the actual process in the South Pars Gas Complex, Iran. Using the dynamic HYSYS simulation, it is found that the proposed adaptive observer is capable of estimating the oil and gas flows and identifying the discharge coefficient of the flow meter at issue. To show the performance of the proposed adaptive observer, it is evaluated against and compared with the unscented Kalman filter. The comparison of the results obtained from the proposed observer, unscented Kalman filter, and dynamic HYSYS simulation with data collected from the actual process of the refinery shows the appropriate performance of the both estimation algorithms in detecting the changes in liquid and gas flow rates and the consistency of their results with the real process in the South Pars Gas Complex. The simulations reveal that low-order lumped model is sufficient for estimation of parameters and states of the multiphase flow entering the gas refinery.

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“…Pirouzpanah et al (2014) proposed a kind of wet gas flow meter consisting of coupled slotted orifice plate and swirlmeter, which could be used to accurately measure both liquid and gas flow rates. Hua and Geng (2012) also designed a new wet gas meter combining the vortex precession frequency and the differential pressure of swirlmeter.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on swirlmeter with different helix angles of swirler

Zhang

Cui

Zhang

et al. 2019

Transactions of the Institute of Measurement and Control

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Swirlmeters are widely used to measure the flowrate in engineering due to its simple structure, stable operation stability, and accurate measuring precision. In this paper, in order to disclose the influence of different helix angles of swirler on the metering characteristics of the swirlmeter, the metrological performance and internal unsteady flow of a swirlmeter assembled with three swirlers with different helix angles were studied through physical experiments and numerical calculations. The results show that with the increasing helix angle of swirler, the pressure loss of swirlmeter and meter factor K decrease almost linearly, the vortex core center at throat of the swirlmeter is gradually off-center. In the direction of central axis of the throat, the amplitude of dominant frequency of pressure pulsation increases with the increasing helix angle of swirler.

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Multiphase flow measurements using coupled slotted orifice plate and swirl flow meter

Cited by 26 publications

References 15 publications

Computational method for multiphase flow characterization in the gas refinery

Computational method for multiphase flow characterization in the gas refinery

Multi-phase flow measurement in a gas refinery using decentralized Lyapunov–based adaptive observer

Experimental and numerical study on swirlmeter with different helix angles of swirler

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