Comparison of the hydrodynamic performance of rotor-injector devices in a water physical model of an aluminum degassing ladle

摘要: Abstract The hydrodynamic performance of a stirred ladle, for an aluminum degassing system in turbulent regime, is analyzed experimentally. This study explores the dynamic flow features due to bubble dispersion on gas–liquid flow. Diverse impellers with geometrical differences are tested purpose comparing influence behavior. Three rotor-injector devices compared, including two conventional designs and one new rotor design. evaluated at gas rates. velocity fields investigated water physical model under conditions similar those encountered process molten aluminum. particle image velocimetry (PIV) technique employed obtain during process. In such way, instantaneous measurements field gassed ungassed were obtained. Considering gassing conditions, it found that patterns changed drastically all rotors tested. Moreover, results showed significant conditions. Here, demonstrated geometries strongly affect distribution intensities. It was exhibits better showing high intensities, producing higher breakup rate promoting formation small bubbles can be easily distributed over entire ladle. its asymmetrical geometry, as exposed present analysis.