کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
659721 1458137 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adaptive phase field simulation of dendritic crystal growth in a forced flow: 2D vs 3D morphologies
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Adaptive phase field simulation of dendritic crystal growth in a forced flow: 2D vs 3D morphologies
چکیده انگلیسی

Two- and three-dimensional (3D) adaptive phase field simulations of dendritic crystal growth in a forced flow are presented. The simulations are based on an adaptive finite volume mesh for a better resolution on the dendrite morphology. It also allows the simulation in a large domain without much additional computing cost, so that the boundary effect can be neglected for the comparison with classic solutions. With the efficient simulations, the effect of forced convection on the growth behavior at high undercooling is discussed, and the results agree well with Oseen–Ivantsov solution and the reported results. For the case of low undercooling, the simulated tip radius and speed are also consistent with the experimental ones. As compared with 2D morphologies, side branches are easily induced in 3D dendrites, and the dramatic difference can be explained through the simulated flow structures and temperature fields. The effect of the flow on the side branching for different undercoolings is also illustrated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 52, Issues 5–6, February 2009, Pages 1158–1166
نویسندگان
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