The measuring method for tests of horizontal two-phase gas–liquid flows, using optical and capacitance tomography

Rząsa, Mariusz

doi:10.1016/j.nucengdes.2008.12.020

Cited by 26 publications

(16 citation statements)

References 5 publications

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“…Moreover, the light ray is reflected and scattered when passing through across a bubble. All these effects cause substantial light intensity attenuation on the way to the detector (Kawaguchi et al, 2002;Rząsa, 2009).…”

Section: Optical Tomography -Principle Of Operationmentioning

confidence: 99%

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Selection of Optical Tomography Parameters for Gas Bubble Shape Analysis

Rząsa¹

2014

Chemical and Process Engineering

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An optical tomograph in which a tested object is illuminated from five directions has been presented in the paper. The measurements of luminous intensity after changing into discrete signals (0 or 1) in the detectors equipped with 64 optical sensors were subjected to reconstruction by means of the matrix algorithm. Detailed description of the measuring sensor, as well as the principles of operation of the electronic system, has been given in the paper. Optical phenomena occurring at the phase boundary while transmitted through the sensor wall and phenomena inside the measuring space have also been taken into account. The method of the sensor calibration has been analysed and a way of technical solution of the problem under consideration has been discussed. The elaborated method has been tested using objects of the known shape and dimensions. It was found that reconstruction of the shapes of moving bubbles and determination of their main parameters is also possible with a reasonable accuracy.

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Section: Optical Tomography -Principle Of Operationmentioning

confidence: 99%

“…4. Geometry of the light ray in the measuring space (Rząsa, 2009) In order to determine the sensitivity matrix we should observe the ray path. After its release from the source, it is subject to refraction at the boundary between two media n 1 and glass n 2 according to the Snell law.…”

Section: Determination Of Sensitivity Chartsmentioning

confidence: 99%

Selection of Optical Tomography Parameters for Gas Bubble Shape Analysis

Rząsa¹

2014

Chemical and Process Engineering

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“…Figure 23. The test stands [46] The capacitance tomography system is set up as figure 24 where the 16 capacitance sensors were Mohd Zain [47] also used the same modality as Rzasa. In his research, every projection was vertically position for each measurement plane [48].…”

Section: B Dual Modality Tomographymentioning

confidence: 99%

A Review on Applications of Optical Tomography in Industrial Process

Khairi

Ibrahim

Yunus

et al. 2012

International Journal on Smart Sensing and Intelligent Systems

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“…The recognition of transport method of the gas phase and the assessment of the size of the resulting structures are being increasingly undertaken as research topics. The most often used in such studies are Tomographic methods: electric, X-rays and gamma rays and optical methods [1][2][3][4][5]. Tomography systems require the installation of sensors around the selected sections of the pipeline and from the obtained signals to reconstruct the image showing the distribution of individual gas bubbles, and also outline the basic flow parameters.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the structures size in the liquid-gas flow by gamma-ray absorption

et al. 2018

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Abstract. The rapid development of tomography methods particularly electrical, X and gamma rays allows for a wide range of the information about flow structure. However, all of such methods are quite complicated. At the same time much simpler systems as the measuring system of gamma rays absorption, allows to obtain a all key flow information which describe the two-phase flow. In the article the results of analyzes of radiometric signal that not only allow to recognize the type of flow, but also the assessment of forming structures are presented. Calculation and interpretation of the data were based on the crosscorrelation and cross-spectral density function. In order to verify the calculations the photographic documentation made during the measurements was used.

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The measuring method for tests of horizontal two-phase gas–liquid flows, using optical and capacitance tomography

Cited by 26 publications

References 5 publications

Selection of Optical Tomography Parameters for Gas Bubble Shape Analysis

Selection of Optical Tomography Parameters for Gas Bubble Shape Analysis

A Review on Applications of Optical Tomography in Industrial Process

Evaluation of the structures size in the liquid-gas flow by gamma-ray absorption

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