凝固を伴う熱・流れの解析と薄板連続鋳造への応用

概要

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Coupled equations for mass and energy transportation incorporated with fluid/solid transformation are formulated in the Eulerian coordinate system. The latent heat generation associated with the mushy zone and the heat due to mechanical work of fluid flow are introduced in the heat conduction equation, and the prediction of a solidifying boundary is evaluated by considering the mixture theory of solid and fluid by use of a lever rule in the phase diagram. Assuming the viscoplastic constitutive equation for both solid and liquid, a finite element scheme is formulated. As an application, the thin slab casting process by the twin roll technique in a steady state is simulated to evaluate the fields of temperature velocity and stress/deformation. In order to verify the procedure, calculated temperatures are compared with the measured data, and the effect of a jet stream from the nozzle on the flow pattern is discussed.
一般社団法人日本機械学会の論文
1993-09-25