발간논문

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Vol.50, No.2, 129 ~ 136, 2012
Title
Large Eddy Simulation of Fluctuating Mold Level -Effects of Nozzle Geometry on Oscillation Frequency
이경준 Kyong Jun Lee , 양경수 Kyung Soo Yang , 조명종 Myung Jong Cho , 황종연 Jong Yeon Hwang
Abstract
High speed casting technology is an attractive method to increase the productivity of continuous casting. However, high speed casting causes flow instability of molten steel in a mold. In this study, Large Eddy Simulation (LES) has been performed to identify the characteristics of mold flow for various shapes of submerged entry nozzles. The LES code has been newly developed to efficiently compute the two-phase flow by using the Fractional Step Method (FSM) combined with the Volume of Fluid (VOF) method. The Immersed Boundary Method was used to implement the shape of the submerged entry nozzle. Three cases of discharge angle of the submerged entry nozzle were computed and compared. The current results shed light on improving shape design of a submerged entry nozzle.
Key Words
Liguids, casting, interfaces, computer simulation
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