Selection of Optical Tomography Parameters for Gas Bubble Shape Analysis

• Authors: Mariusz R. Rząsa
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

bubble shape; gas flow; optical tomography; two-phase measurement

• Publisher: De Gruyter Open
• Journal: Chemical and Process Engineering
• Year: 2014
• Volume: 35
• Issue: 1
• Pages: 19-33

Dates

published

1 - 3 - 2014

accepted

10 - 12 - 2013

online

25 - 4 - 2014

received

6 - 12 - 2012

Contributors

author

Mariusz R. Rząsa

• Technical University of Opole, Department of Thermal Engineering and Industrial Facilities, ul. Mikołajczyka 5, 45-233 Opole, Poland

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Identifiers

DOI

10.2478/cpe-2014-0002