REVIEW OF MEASURMEMENT TECHNIQUES FOR INDUSTRIAL TWO-PHASE GAS-LIQUID FLOW APPLICATIONS AT CHALK RIVER LABORATORIES

Abstract

Over the last decade, there has been an increasing emphasis on developing advanced measurement techniques that could be used to provide accurate physical descriptions of complex two-phase flows for industrial applications. Local high fidelity test data can provide an important means for developing and verifying advanced two-phase flow models, which increasingly include three- dimensional flow field predictive capabilities. This paper provides an overview of progress in developing selected advanced measurement techniques at the Chalk River Laboratories (CRL) for two-phase gas-liquid flow applications. Citing examples, a more in-depth discussion of technologies that have been used in CRL is presented, which has typically been intrusive technologies such as conductivity probes, fiber optic probes, hot film anemometry, wire mesh sensors. These discussion serve as a backdrop for developmental evaluation of other advanced techniques such as high speed digital imaging, pulsed laser shadowgraphy, and particle image velocimetry. The limitations and challenges that have been experienced in adapting the various measurement techniques to practical industrial applications are briefly discussed in the context of anticipated needs for next generation thermal-hydraulics testing capabilities.