Author(s): Jan Krupicka; Vaclav Matousek
Linked Author(s): Vaclav Matousek
Keywords: No Keywords
Abstract: The paper summarizes our experience with the radiometric devices installed to the experimental pipe loop for investigations of slurry flows in the Institute of Hydrodynamics in Prague. The vertical shifting support and a horizontally collimated beam enable to acquire vertical profiles of chord-averaged densities in a cross section of a pipe transporting a heterogeneous mixture. Moreover, our devices are equipped also with a rotating support. This enables us to acquire data that can be processed by computer tomography algorithms to obtain a distribution of local densities in a pipe cross section. Due to the simple “one source–one detector” construction of our device the number measurement available over a reasonably long time period is limited. Two algorithms for density distribution reconstruction are compared showing their efficiency when dealing with a limited number of data. Numerical simulations show that the accuracy of the method is mainly reduced by the errors in beam positioning, and by randomly generated fluctuations of emission and detection of gammaray photons.
Year: 2012