Relative errors in evaluating the electromagnetic flowmeter signal using the weight function method and the finite volume method

Lim, Ki Won; Chung, Myung Kyoon

doi:10.1016/s0955-5986(98)00029-6

Cited by 19 publications

(5 citation statements)

References 5 publications

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“…However, despite the work of researchers such as Lim and Chung [11], who used the finite volume method (FVM), the solution of the weight function is poorly understood for electrode pairs that are located arbitrarily on the internal circumference of the electromagnetic flow meter. Therefore, the purpose of this paper is to perform an initial investigation into a numerical method for determining the weight function value at every point in the flow cross section for arbitrary electrode pairs on the internal circumference of the flow meter.…”

Section: Introductionmentioning

confidence: 99%

A numerical approach to the determination of electromagnetic flow meter weight functions

Wang¹,

Lucas²,

Tian³

2007

Meas. Sci. Technol.

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A new finite element procedure for the solution of the electromagnetic flow meter weight function is presented. The weight function represents the relative contribution of the fluid velocity at a particular spatial location in the flow cross section to the output signal from the flow meter. The solution of the weight function is important for inferring the velocity profile from measured potential differences within the electromagnetic flow meter. First, a numerical simulation model was constructed with COMSOL Mutiphysics [1]. Next, a study was undertaken to compare the numerical simulation model with Shercliff's [2] analytical solution for the weight function. The finite element methodology was found to be correct for solving the weight function. Based on this result, the numerical simulation model was used to compute the weight function for two flow meter geometries. For both cases the electrodes were located on the internal circumference of the flow pipe and the line joining the electrodes was normal to the imposed magnetic field. In the first case the separation of the electrodes was equal to one pipe diameter but in the second case the electrode separation was less than one pipe diameter. The methodology presented in this paper represents the first stage in the development of an image reconstruction technique which could be used to obtain the liquid velocity profile from boundary voltage measurements obtained in flows with highly skewed velocity distributions.

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Section: Introductionmentioning

confidence: 99%

A numerical approach to the determination of electromagnetic flow meter weight functions

Wang¹,

Lucas²,

Tian³

2007

Meas. Sci. Technol.

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“…At the same time, some simulation methods were designed with the development of finite element software for multifields. Lim and Choong analyzed the relative errors in evaluating the electromagnetic flowmeter signal using the weight function method and the finite volume method [10]. Michalski et al applied 3D approach to designing the excitation coil of an electromagnetic flowmeter in 2012 [11].…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Annular Flow Electromagnetic Measurement System for Drilling Engineering

Wang

et al. 2018

Journal of Sensors

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Using the downhole annular flow measurement system to get real-time information of downhole annular flow is the core and foundation of downhole microflux control drilling technology. The research work of electromagnetic flowmeter in recent years creates a challenge to the design of downhole annular flow measurement. This paper proposes a design and optimization of annular flow electromagnetic measurement system for drilling engineering based on the finite element method. Firstly, the annular flow measuring and optimization principle are described. Secondly, a simulation model of an annular flow electromagnetic measurement system with two pairs of coil is built based on the fundamental equation of electromagnetic flowmeter by COMSOL. Thirdly, simulations of the structure of excitation system of the measurement system are carried out, and simulations of the size of the electrode's radius are also carried out based on the optimized structure, and then all the simulation results are analyzed to evaluate the optimization effect based on the evaluation indexes. The simulation results show that optimized shapes of the excitation system and electrode size can yield a better performance in the annular flow measurement.

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“…Electromagnetic flow meter voltage signal can also be predicted with analytical and numerical analysis. For accurate analysis of the flow meter, numerical simulation using different numerical methods such as finite volume and finite element were used by Lim and Chung (1998) and Vijay Sharma et al (2012).…”

Section: Introductionmentioning

confidence: 99%

Design and development of samarium cobalt based permanent magnet flow meter for 100 NB pipe in sodium circuits

Rajan

Sharma

Vijayakumar

et al. 2015

Annals of Nuclear Energy

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Relative errors in evaluating the electromagnetic flowmeter signal using the weight function method and the finite volume method

Cited by 19 publications

References 5 publications

A numerical approach to the determination of electromagnetic flow meter weight functions

A numerical approach to the determination of electromagnetic flow meter weight functions

Design and Optimization of Annular Flow Electromagnetic Measurement System for Drilling Engineering

Design and development of samarium cobalt based permanent magnet flow meter for 100 NB pipe in sodium circuits

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