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    题名 作者 年代 出处 被引量
1Investigating Magnetic Field Orientation as an Operational Parameter in Thermoelectric MHD Solidification显示文摘A fully coupled 3-dimensional numerical model is used to analyse the effect of magnetic field orientation on dendritic growth.For materials that exhibit a significant thermoelectric power,the results show significant differences in the dendritic morphology for different orientations of the field.These variations can be attributed to fluid flow generated through Thermoelectric Magnetohydrodynamics.A simplified,steady-state,low-field solution during the early stages of growth is used to describe how the fluid flow alters with the orientation of the field and how these flow features can lead to the final morphologies for well developed dendrites.A.Kao K.Pericleous 2012Journal of Iron and Steel Research(International)2012,19,S1:0
2A Multi Scale Method for Thermoelectric MHD in Dendritic Solidification显示文摘A fully coupled transient 3-dimensional multi-scale model has been developed to predict the evolution of dendritic growth in alloys.The motivation to use such a method is to both reduce computational costs and increase the size of the computational domain.The model consists of a mixture of finite volume and finite difference solvers integrated within a novel multi-scale method that solves the three sets of equations(electromagnetism,heat transfer/solidification and fluid dynamics)on appropriate length and time scales.A locus-based method,allows for mesh ref'mement in regions of interest localised around the interface,to improve accuracy without incurring significant computational overheads.This method has facilitated modelling the evolution of complex 3-dimensional structures on a single processor within a reasonable amount of time.As a demonstration,the model is applied to a super-cooled dendritic solidification problem,in the presence of a constant high magnetic field.A Kao K Pericleous 2012Journal of Iron and Steel Research(International)2012,19,S1:0
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