Accuracy study of computer tomography method for radiometric density meter

0364062 - ÚH 2012 RIV PL eng C - Konferenční příspěvek (zahraniční konf.)
Krupička, Jan - Matoušek, Václav
Accuracy study of computer tomography method for radiometric density meter.
15^th International Conference on Transport and Sedimentation of Solid Particles. Wroclaw: Wroclaw University of Environmental and Life Sciences, 2011 - (Sobota, J.), s. 203-211. ISBN 978-83-62633-16-6.
[International Conference on Transport and Sedimentation of Solid Particles /15./. Wroclaw (PL), 06.09.2011-09.09.2011]
Grant CEP: GA ČR GA103/09/0383
Výzkumný záměr: CEZ:AV0Z20600510
Klíčová slova: gamma-ray measurement * slurry flow * concentration distribution
Kód oboru RIV: BK - Mechanika tekutin

The paper deals with the question of how to obtain an accurate density distribution in a cross section of a slurry pipe using a gamma-ray radiometric device adapted for tomography purposes. New radiometric devices at Institute of Hydrodynamics in Prague are presented and basic principles of a measuring method are given. A scatter of a gamma-ray beam and errors in beam-position reading are identified as major factors reducing accuracy of results, particularly in the region near the pipe wall. A numerical simulation was performed to investigate a relation between a standard deviation of the evaluated density and the total measuring time. Only qualitative conclusions can be drawn from the simulation results, however the results demonstrate clearly an importance of a suitable geometrical setup for an experiment using the tomography method.
Trvalý link: http://hdl.handle.net/11104/0199642