Analytical model of an ultrasonic cross-correlation flow meter, part 2: Application

Lysak, Peter D.; Jenkins, David; Capone, Dean E.; Brown, William L.

doi:10.1016/j.flowmeasinst.2007.08.005

Cited by 20 publications

(11 citation statements)

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“…According to several authors [1,2,4], electromagnetic flowmeters ( Figure 5) are only disturbed by the existence of particles that might change the magnetic properties of the fluid. Thus, it is necessary to guarantee the existence of linear flow paths, to insure the measurement accuracy.…”

Section: Flow Meter Installationmentioning

confidence: 99%

“…Therefore, for any hydraulic system manager, the accuracy in flow measurements has significant impacts regarding both planning and investment decisions. Even when following all the constraints imposed by manufactures, incongruences can be identified in the field [4]. These irregularities suggested many times the occurrence of leaks in pipe systems.…”

Section: Introductionmentioning

confidence: 99%

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Flow Velocity Distribution Towards Flowmeter Accuracy: CFD, UDV, and Field Tests

Simão

Besharat

Carravetta

et al. 2018

Water

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Inconsistences regarding flow measurements in real hydraulic circuits have been detected. Intensive studies stated that these errors are mostly associated to flowmeters, and the low accuracy is connected to the perturbations induced by the system layout. In order to verify the source of this problem, and assess the hypotheses drawn by operator experts, a computational fluid dynamics (CFD) model, COMSOL Multiphysics 4.3.b, was used. To validate the results provided by the numerical model, intensive experimental campaigns were developed using ultrasonic Doppler velocimetry (UDV) as calibration, and a pumping station was simulated using as boundary conditions the values measured in situ. After calibrated and validated, a new layout/geometry was proposed in order to mitigate the observed perturbations.Hence, this research has the objective to analyze different variables, namely the pipe layout and the way it can disturb the flow and flowmeter accuracy. The purpose is to assess how vertical or horizontal curves, expansions and reductions, among other geometries can influence the flow and, consequently the measurements. To fulfil this goal, the influence of several perturbations were identified, using an electromagnetic flowmeter and ultrasonic Doppler velocimetry (UDV), and compared with the computed velocity profiles, using CFD models. The numerical model was calibrated and validated using the same conditions as the experimental facility. The numerical simulations showed good approximation with the velocity measurements for two different geometries. To evaluate the accuracy of the numerical results, several experimental tests, using two different geometries, were firstly developed, identifying perturbations in the flow measurements, followed by analysis in a real case study. Electromagnetic FlowmetersFlowmeters are one of the most important and used devices to measure accurately, the volume flow rate [6]. Nowadays there are several types of flowmeters, but the most important for flow measurement are the electromagnetic and the ultrasonic ones. They are characterized for their high accuracy and self-monitoring [7]. According to the authors of [1], electromagnetic flowmeters are only disturbed by existing particles that may change the magnetic properties of each fluid. Properties like temperature, viscosity and the fluid density do not affect the measurements. However, as mentioned in [8], a steady regime is a necessary condition to guarantee accurate measurements.These flowmeters have two different elements: the primary and the convertor (Figure 1). The first element corresponds to a hollow circular pipe with coils along its length and is set in the pipeline [9,10]. The flow passing through the section, creates an electromagnetic field which is proportional to the volume flow rate. The convertor is the brain element: it creates a magnetic field, reads the voltage, displays the data, and generates outputs. The convertor displays the volume flow rate and the amount of volume passed through.Water 2018, 10, x FOR PEER REV...

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Section: Flow Meter Installationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flow Velocity Distribution Towards Flowmeter Accuracy: CFD, UDV, and Field Tests

Simão

Besharat

Carravetta

et al. 2018

Water

View full text Add to dashboard Cite

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“…odies ic flowmeters was rmed [5,6] on data from agraphs show one of the many variants that were of the flowmeter bodies were f…”

Section: Flow In Ultrasonic Flowmeter Bomentioning

confidence: 99%

Modelling of flow in pipes and ultrasonic flowmeter bodies

Matas

Čibera

Syka

2014

EPJ Web of Conferences

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“…[7,8]. The cross-correlation principle works by measuring an averaged convection velocity of the turbulent velocity perturbations [9,10]. Moreover, some experts pay attention to the mathematical modeling of the wave propagation along the fluid waveguide [11][12][13] and transducer transfer function [5,14,15].…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic flow meter for propellant on-orbit gauging based on folded multi-tone phase measurement: Model analysis

Chen

Huang

et al. 2012

2012 American Control Conference (ACC)

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Ultrasonic flow meter which provides non-invasive no-moving-parts construction is one of the fasted-growing technologies in flow gauging. Based on the general elasticity theory, this paper investigates sound wave propagation in elastic solid, as well as the mathematical description of ultrasonic transducer with the help of electric-acoustic analysis. Moreover, wave phenomenon in moving fluid is introduced and a general solution of wave propagation in cylindrical bounded pipeline is obtained based on the perturbation theory. Furthermore, a mathematical modeling of the ultrasonic flow meter is established in the uniform fluid velocity profile using continuous wave and a novel solution based on modified multi-tone phase measurement is investigated with the advantage of cancellation of impact of complex cylindrical waveguide in different modes which is widely available in pulse-wave-based measurement application. In the end, phase lock loop (PLL) is introduced and analyzed in the signal processing of noise attenuation and phase shift tracking.P

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Analytical model of an ultrasonic cross-correlation flow meter, part 2: Application

Cited by 20 publications

References 1 publication

Flow Velocity Distribution Towards Flowmeter Accuracy: CFD, UDV, and Field Tests

Flow Velocity Distribution Towards Flowmeter Accuracy: CFD, UDV, and Field Tests

Modelling of flow in pipes and ultrasonic flowmeter bodies

Ultrasonic flow meter for propellant on-orbit gauging based on folded multi-tone phase measurement: Model analysis

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