Measurements of Dispersed Phase Velocity in Two-Phase Flows in Pipelines Using Gamma-Absorption Technique and Phase of the Cross-Spectral Density Function

This paper concerns the application of gamma radiation absorption method in measurements dispersed phase velocity two-phase flows: liquid–gas flow a horizontal pipeline and liquid–solid particles vertical pipe. Radiometric sets containing two linear 241Am sources NaI(Tl) scintillation detectors were used research. Due to stochastic nature signals obtained from probes, statistical methods for their analysis. The average transportation was calculated using cross-spectral density function registered by detectors. It is shown that presented cases, can be more accurate than most commonly classical cross-correlation one.