The stirring of ladle refining in the liquid steel is mainly by blowing gas from the bottom to improve the effect of deoxidation, desulfurization, dephosphorization and removal of inclusions in recent years. But due to the presence of a dead area by blowing gas from the bottom, the kinetic condition of desulfurization, dephosphorization, Deoxidization can not be satisfied efficiently. Taking on 180t ladle of some steel factory as prototype, simulation calculation of fluid flow in ultrasonic cavitation and b...