Investigation of Liquid–Gas Flow in a Horizontal Pipeline Using Gamma-Ray Technique and Modified Cross-Correlation

This article presents the application of radioisotope absorption method in study two-phase water–air flow a horizontal pipe. The measurement principle and test stand are briefly described. main part signal analysis methods applied to data obtained from scintillation detectors. Because these signals mostly stochastic waveforms, they were analyzed statistically using cross-correlation function (CCF), that combination CCF differential methods: CCF/ASDF CCF/AMDF, where ASDF is average square difference function, AMDF magnitude function. Examples results gas phase velocity for four types presented. It was found CCF/AMDF allow more accurate measurements dispersed be than method.