MODELING OF BINARY MELT CRYSTALLIZATION IN NUMERICAL AND EXPERIMENTAL BENCHMARKS
S. M. Ganina, V. P. Ginkin, O. N. Budenkova, B. Saadi, L. Ashani, I. Fotrel
VANT. Ser.: Mat. Mod. Fiz. Proc 2012. Вып.3. С. 45-56.
Computer modeling of a 2D numerical and a quasi-2D experimental binary melt crystallization benchmarks was done.
Results of the numerical benchmark simulations done with the FLUENT and GIGAN sowtware were compared. Impurity segregation results are in both qualitative and quantitative agreement.
Results of numerical simulations of recrystallization of a rectangular Sn-Pb ingot are presented. The simulations were done with the GIGAN software using two crystallization models - the equilibrium and the non-equilibrium one. The comparison of experimental and numerical data shows that the evolution of the temperature field driven by natural convection and impurity distribution in the crystallized specimen are better described by the non-equilibrium crystallization model.Keywords: crystallization, binary melt, macrosegregation, phase diagram, two-phase zone, convection, heat and mass transfer, columnar to equiaxial transition (CET).
|
English
