Physical Modeling of the Effects of the Flow Modifier on the Dynamics of Molten Steel Flowing in a Tundish.

The effect of weir, dam, slotted damand their combinations on the molten steel flow dynamics in a tundish was investigated in a physical model by studying thc flow pattern and residence time distribution.The number, position and size of the above flow modifiers, Froude number, tundish width and inlet~xit distance were varied during the course of the study.For all tundish widths, weirs of all sizes were found to produce short circuiting in the tundish fluid flow system.Whereas use of a damalone or in combination with a weir or a slotted dam eliminates short circuited flow completely.The residence time and variance are found to be influenced by the tundish width, inlet-exit distance and FM configurations.Empirical correlations were obtained to calculate residence time and variance.