鋳型内電磁攪拌を対象にした電磁流体解析における時間変動電磁力考慮の必要性

概要

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In continuous casting process, MHD calculation is utilized to make clear and design the process. Previous MHD calculation takes no account of time-varying electromagnetic force which is enough smaller than mass inertia, because previous purpose is estimation of time average major flow in interior of mold. However, to improve surface quality of slab more, the dynamic behavior of free surface where the solidification begins must be made clear in detail. In this paper, we evaluated influence that time-varying electromagnetic force exerts on the flow in MHD calculation. As the result, the flow of free surface is disordered intensely by the taking into account of time-varying electromagnetic force. Therefore, time-varying electromagnetic force must be used, to make clear the dynamic behavior of free surface. However, previous MHD calculation with small computation cost suits to evaluate major flow in interior of mold, because it is same approximately in both methods.
社団法人電気学会の論文
2004-01-01