The parameters measurement of air–water two phase flow using the electrical resistance tomography (ERT) technique in a bubble column

Jin, Haibo; Lian, Yicheng; Yang, Suohe; He, Guangping; Guo, Zhi

doi:10.1016/j.flowmeasinst.2012.11.002

Cited by 38 publications

(14 citation statements)

References 23 publications

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“…The aim of ICA is to get the value of mixing matrix ( ) and/or source signal matrix ( ) given only realizations of the observation matrix of . After the ICA process was executed, (10) converts to (11) where is the unmixing matrix and equals −1 :̂= .…”

Section: Water With Gas Bubblementioning

confidence: 99%

“…Investigation on gas bubble behaviour in industry such as food and pharmaceutical is vital since the existence of unwanted bubbles can reduce the quality of product [8]. Previous research on gas bubbles measurement in the tomography field was conducted by Rzasa [9], Jin et al [10], and Ayob et al [11] which used pure water as a liquid. Generally, the unwanted gas bubbles are in the form of opaque liquid such as oil and paint.…”

Section: Introductionmentioning

confidence: 99%

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Gas Bubbles Investigation in Contaminated Water Using Optical Tomography Based on Independent Component Analysis Method

Khairi

Ibrahim

Yunus

et al. 2016

International Journal of Optics

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This paper presents the results of concentration profiles for gas bubble flow in a vertical pipeline containing contaminated water using an optical tomography system. The concentration profiles for the bubble flow quantities are investigated under five different flows conditions, a single bubble, double bubbles, 25% of air opening, 50% of air opening, and 100% of air opening flow rates where a valve is used to control the gas flow in the vertical pipeline. The system is aided by the independent component analysis (ICA) algorithm to reconstruct the concentration profiles of the liquid-gas flow. The behaviour of the gas bubbles was investigated in contaminated water in which the water sample was prepared by adding 25 mL of colour ingredients to 3 liters of pure water. The result shows that the application of ICA has enabled the system to detect the presence of gas bubbles in contaminated water. This information provides vital information on the flow inside the pipe and hence could be very significant in increasing the efficiency of the process industries.

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Section: Water With Gas Bubblementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gas Bubbles Investigation in Contaminated Water Using Optical Tomography Based on Independent Component Analysis Method

Khairi

Ibrahim

Yunus

et al. 2016

International Journal of Optics

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“…It is also considered more advantageous to use MIT in flow imaging compared to electrical resistance tomography techniques [15,16,17]. Due to the low resolution of this technique, the realisation of MIT as a smart imaging device for industrial process tomography remains a challenging topic.…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of conductive flow imaging using magnetic induction tomography

Hunt

Soleimani

2015

International Journal of Multiphase Flow

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Multi-phase flow imaging is a challenging topic in industrial process tomography. In this paper, we present a non-invasive imaging technique for the electrically conductive phase of a multi-phase flow problem. Magnetic induction tomography (MIT) is sensitive to the conductivity of the target, and as such has the potential to be used as an imaging technique to visualise the conductive components in a multi-phase flow application. A 16 channel MIT system is used for this study, among which eight excitation coils are supplied with a 15V peak, 13MHz sinusoidal signal in sequence from a signal generator, while the remaining eight coils are floated as receivers. The imaging region of this MIT system has an inner and outer diameter of 190mm and 200mm respectively. Static fluid distribution patterns are produced using several fluids with different conductivities and placed inside the imaging region to form conductivity phase contrasts. Experimental results show within our hardware and software capability, a conductivity contrast of 0.06S/m for an inclusion that occupies 8.69% of the imaging region can be imaged. An in-depth experimental evaluation of the system response towards various fluid measurements is shown for the first time, as are results for quasi-static fluid experiments showing that a non-homogenous flow of gas bubbles can be imaged in various conductive backgrounds. In sum, the analyses presented investigate the feasibility and capability of MIT for this application, while also reporting some of the first flow rig tests in this field.

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“…The EIT imaging technique is also referred to as electrical resistance tomography (ERT) in applications where the permittivity is negligible [3]. A typical industrial application of ERT is real time monitoring of twophase and multiphase flows [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

An element-free Galerkin forward solver for the complete-electrode model in electrical impedance tomography

Hadinia

Jafari

2015

Flow Measurement and Instrumentation

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The parameters measurement of air–water two phase flow using the electrical resistance tomography (ERT) technique in a bubble column

Cited by 38 publications

References 23 publications

Gas Bubbles Investigation in Contaminated Water Using Optical Tomography Based on Independent Component Analysis Method

Gas Bubbles Investigation in Contaminated Water Using Optical Tomography Based on Independent Component Analysis Method

Experimental evaluation of conductive flow imaging using magnetic induction tomography

An element-free Galerkin forward solver for the complete-electrode model in electrical impedance tomography

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