Gamma-ray-based measurement of concentration distribution in pipe flow of settling slurry: vertical profiles and tomographic maps

0427217 - ÚH 2014 RIV SK eng J - Článek v odborném periodiku
Krupička, Jan - Matoušek, Václav
Gamma-ray-based measurement of concentration distribution in pipe flow of settling slurry: vertical profiles and tomographic maps.
Journal of Hydrology and Hydromechanics. Roč. 62, č. 2 (2014), s. 126-132. ISSN 0042-790X. E-ISSN 1338-4333
Grant CEP: GA ČR GA103/09/0383
Institucionální podpora: RVO:67985874
Klíčová slova: two-phase flow * gamma radiometry * computational tomography * slurry flow experiment
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 1.486, rok: 2014

Principles of gamma-ray-based measurement are summarized and their application is demonstrated on an operation of the radiometric facility installed in the test loop for slurry flows at the Institute of Hydrodynamics. The facility is able to measure vertical profiles of chord-averaged concentrations and concentration maps in the pipe cross section. A methodology of measurement is proposed including detection and quantification of random and systematic errors. Experimental results are discussed in the light of the proposed methodology. Experimentally determined vertical profiles of concentration are presented for slurry flows of four different fractions of glass beads. The tomographic application of the radiometric device is demonstrated on a measured concentration map and a suitable image reconstruction method is tested. High reliability of measured concentration distributions is proved except for regions near the pipe wall. The radiometric method is shown to be a useful tool for measurement of concentration distribution in slurry flow through a pipe.
Trvalý link: http://hdl.handle.net/11104/0232819