Mathematic and Physical Simulation of the Melt Flow at Roll Casting of Steel Bars
Journal Title: Metallurgical and Mining Industry - Year 2018, Vol 10, Issue 1
Abstract
The publication deals with a fluid flow in the interroll space of twin-roll plant with a horizontal roll arrangement. In this connection, the new method has been developed and verified by physical simulation of the fluid flow under the mentioned conditions. A mathematical model describing the turbulent fluid flow between two rotating rolls in the test plant of a twin roll caster has been considered and implemented within the medium of Comsol software. The currently popular k − ε model and the simplified model with an effective viscosity calculated by Prandtl formula have been used as the turbulence models. A good qualitative and quantitative coincidences of these models are observed if 1/4 of the width of the channel at the level of the fluid free surface is assumed as a mixing technique in the Prandtl formula or if the value of the effective viscosity of the studied liquid (water) is set more than 100 times above its molecular viscosity. The comparison has been carried out between the results of the fluid flow numerical calculation and the values of its speed measured at the test plant and are found consistent with the good qualitative and quantitative coincidences. The results of the conducted studies confirm the effectiveness of Comsol software package to be applied for molten metal flow simulation during the roll casting process and this allows reduction in the costs for the experimental research and the design of pilot plants of this type.
Authors and Affiliations
А. V. Nogovitsyn, А. D. Podoltsev, I. N. Kucheriavaia, I. R. Baranov
Keywords
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