Based on turbulent model and VOF model

the numerical simulation and analysis on gas-slag-liquid three- phase flow field in 210 t ladle furnace (LF) during argon blowing have been carried out by using CFD fluid engineering simulation software FLUENT6. 3.26 to get the effect of bottom blowing porous plug position (single center plug

single eccentric plug and double plugs) and argon flow rate (100 ~500 L/min) on behavior of liquid circle flow

size of slag eye and slag entrapment. Study results show that with different bottom porous plug position the liquid mixing speed and size of slag eye are different; the slag is easily entrapped by liquid at slag eye； the stagnation zone with double plugs bottom blowing is quite small than that with single plug bottom blowing； the more argon flow rate the more dimension of slag eye

as diameter of slag eye is more than 611 mm the change of dimension of slag eye is small ； the suitable argon flow rate for 210 t ladle with double plugs bottom blowing is 200 〜300 L/min.