LAUSR

Water and different oils were used to represent liquid metal and slag, respectively, in a cold model simulation of gas bubbles rising through molten metal and slag layers. It was seen that the ascending gas bubbles appeared to attain a quasi-stationary state for a finite duration at the interface between the two liquid layers. The magnitude of this apparent residence time was dependent on draining of the liquid film around the bubble, which, in turn, influenced the entrainment of the heavier liquid into the lighter one.