Identification of Gas-Liquid Two-Phase Flow Patterns Using Various Experimental Techniques: A Review

Abstract

The present article covers various aspects of different experimental techniques utilized for identifying the gas-liquid two-phase flow patterns in horizontal pipe. Description of commonly observed gas-liquid two-phase flow patterns is reported in the beginning of the present paper. Utilized experimental techniques for determination of two-phase flow patterns are reviewed in detail. These include optical visual observation technique using high-speed photography system, impedance wire-mesh technique using capacitance probe or conductance probe, pressure fluctuations technique using pressure transmitters or sensors, and photon attenuation (X-ray or γ-ray or neutron beams) or tomographic visualization technique. Detailed descriptions of these techniques along with their utilization by various researchers have been reported in the present review. An attempt has been made through this review article to assist the young researchers who are looking for experimental techniques for determining the two-phase flow patterns precisely and accurately as per their requirements.