Multiphase Flow Analysis Using A Compact Gamma-Ray CT System

André Bieberlea, Hans-Ulrich Härtinga, Markus Schuberta, Uwe Hampela,b

a Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf,

Bautzner Landstr. 400, 01328 Dresden, Germany

b AREVA Endowed Chair of Imaging Techniques in Energy and Process Engineering, Technische Universität Dresden, 01062 Dresden, Germany

Abstract

A new compact high-resolution gamma-ray computed tomography measurement system (CompaCT) for determination of phase fraction distributions in multiphase flows, occurring in technical devices with dense housings and inlets, has been developed. The obtained measurement data can be used to understand fundamental physics behind flow processes and to validate multi-phase flow models. The CompaCT contains a 137Cs isotopic source and a thermally stabilized gamma-ray detector arc. Analogue and digital processing units are fully implemented within the detector. As examples, performance studies were accomplished in a steel rod bundle and a fixed bed reactor assembly.

Keywords: gamma-ray; computed tomography; multi-phase flow