Experimental Study on Turbulence Structure of Liquid-Phase in Gas-Liquid Bubbly Flow

Abstract

Experimental study was made on the turbulence structure of vertical upward gas-liquid two-phase bubbly flow through 20-mm and 50-mm round tubes. In this study, the turbulence fluctuation velocity and the power spectral density on the basis of experimental data measured by a hot-film anemometer for various turbulent flow conditions were analyzed and they were considered by the void fraction distribution and the liquid single-phase flow. Furthermore the vortex scale, the wake size and the void interval were also discussed by those analytical results.