Development of Conductivity Probe and Signal Processing Algorithm for Measuring of Local Two-Phase Flow Parameters

Accurate measurement of local two-phase flow parameters is important for the evaluation of two-phase flow models as well as for the development of closure relations used in the two-fluid model. This paper presents the research development on experiments of two-phase flow hydrodynamic phenomena at Hanoi University of Science and Technology which include a small-scale test rig in vertical round tube configuration as well as the double-sensor conductivity probe for measuring of local two-phase flow parameters such as void fraction, phasic velocity, interfacial area concentration. Also the Signal conditioner, Data Acquisition and System and Signal processing scheme have been developed for the newly designed conductivity probe. Good performance of the measurement system is confirmed by benchmark experiments employing the image analysis method. (author)