Imaging of mixing of two miscible liquids using electrical impedance tomography and linear impedance sensor

Kourunen, Jari; Käyhkö, Ritva; Matula, Jouni; Käyhkö, Jari; Vauhkonen, Marko; Heikkinen, Lasse

doi:10.1016/j.flowmeasinst.2008.07.002

Cited by 21 publications

(14 citation statements)

References 7 publications

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“…Applying electrical capacitance tomography to low water fraction foams (<0.05) was addressed by William et al 60) . Kourunen et al used electrical impedance tomography to image the mixing of two miscible liquids in a turbulent flow, using the trump-jet mixing system of papermaking chemicals and additives 61) .…”

Section: Some Up-to-date Electrical Tomography Applicationsmentioning

confidence: 99%

Electrical Tomography: a review of Configurations and Applications to Particulate Processes

Rasteiro

Silva

Garcı́a

et al. 2011

KONA

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Despite decades of research, the study of suspension flows still continues to be a subject of great scientific interest. In the development of accurate models for suspension-related processes, prior knowledge of several flow characteristics is essential, such as spatial distribution of phases, flow regimen, relative velocity between phases, etc. Several non-invasive techniques of flow characterisation can be found in the literature, however, electrical tomography offers a vast field of possibilities due to its low cost, portability and, above all, safety of handling. In this paper, a review of the use of electrical tomography for industrial/process monitoring purposes will be presented, giving information about the evolution throughout the years and about the limitations and advantages of the different configurations. Moreover, the signal de-convolution strategies, to obtain the images of the process, will also be discussed. The most recent advances in both fields will be presented. Additionally, information about the strategy adopted by the authors to produce a portable EIT system will be described. Finally, the future challenges for electrical tomography will be addressed.

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Section: Some Up-to-date Electrical Tomography Applicationsmentioning

confidence: 99%

Electrical Tomography: a review of Configurations and Applications to Particulate Processes

Rasteiro

Silva

Garcı́a

et al. 2011

KONA

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“…The most typical applications of EIT include monitoring of multiphase flow (George et al, 2001) and mixing processes (Kourunen et al, 2008), also with chemical reactions during mixing (Stanley, 2006). This method is likewise applicable to the study of combustion (Yan et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Applications of Electrical Capacitance Tomography for Research on Phenomena Occurring in the Fluidised Bed Reactors

Porzuczek¹

2014

Chemical and Process Engineering

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The paper presents a review of current achievements in the Electrical Capacitance Tomography (ECT) in relation to its possible applications in the study of phenomena occurring in fluidised bed reactors. Reactors of that kind are being increasingly used in chemical engineering, energetics (fluidised bed boilers) or industrial dryers. However, not all phenomena in the fluidised bed have been thoroughly understood. This results in the need to explore and develop new research methods. Various aspects of ECT operation and data processing are described with their applicability in scientific research. The idea for investigation of temperature distribution in the fluidised bed, using multimodal tomography, is also introduced. Metrological requirements of process tomography such as sensitivity, resolution, and speed of data acquiring are noted.

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“…The study of dielectric properties of human living tissue has a positive meaning on the investigation of mechanism of interaction between the magnetic field and the organism [1], electromagnetic therapy [2,3], bioelectric inverse problems [4], electrical magnetic functional imaging [5,6] and other issues. At present the dielectric properties of human tissues mainly comes from a website [7] created by Italian Institute of Applied Physics that was based on the date and parameters of the model published by Gabriel et al [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on the Dielectric Properties between Living and Nonliving from Human and Animal Livers

Wang

Shi

et al. 2013

IFMBE Proceedings

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Abstract-The data of dielectric properties of human tissues mainly comes from animal tissues or human corpse at present. Up to now there has not been a report of dielectric properties of human living liver. Our objective is to study the dielectric properties of human living liver and compare the results with those of animal living liver as well as the human nonliving liver. In vitro measurements of living and nonliving livers from human and rabbit are shown in the 10 Hz to 100 MHz range. Analysis of the conductivity, permittivity and characteristic parameters from the data were made. The conductivity of three kinds of liver were markedly different at low frequency: 0.06 S/m (living rabbit liver), 0.13 S/m (living human liver) and 0.24 S/m (nonliving human liver); The Cole parameters that best characterize the liver of human and rabbit are R0 fc1 R1 and R∞ The Cole parameters that best characterize the living and nonliving liver of human are R0 fc1 R1 R2 and R∞. In conclusion, we can't substitute the dielectric properties of animal or human corpse liver for the living human liver. The results suggest that studying the dielectric properties of living human tissues has great significance.

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Imaging of mixing of two miscible liquids using electrical impedance tomography and linear impedance sensor

Cited by 21 publications

References 7 publications

Electrical Tomography: a review of Configurations and Applications to Particulate Processes

Electrical Tomography: a review of Configurations and Applications to Particulate Processes

Applications of Electrical Capacitance Tomography for Research on Phenomena Occurring in the Fluidised Bed Reactors

Comparative Study on the Dielectric Properties between Living and Nonliving from Human and Animal Livers

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