The accuracy of a solid packing fraction model in recognizing zones of different dendritic structures
The accuracy of a solid packing fraction model in recognizing zones of different dendritic structures
复制标题
固体堆积分数模型识别不同树突结构区域的准确性
DOI：
10.1016/j.ijheatmasstransfer.2012.03.082
复制
发表时间：
2012
影响因子：
5.2
通讯作者：
M. Seredyński
中科院分区：
文献类型：
--
作者：
J. Banaszek;M. Seredyński
一个固定的控制体积网格上的前端跟踪方法，假设枝晶尖端动力学的基础上，施加到讨论的准确性的数值模型，其中的一致性固体分数是用于识别不同的枝晶区域内发展的糊状区在二元合金凝固过程中由扩散和热溶质浮力驱动。结果表明，该临界值的固体体积分数不是恒定的，而是随着时间和沿着边界分离的区域而变化。
A front tracking method on a fixed control-volume grid, based on assumed dendrite tip kinetics, is applied to discuss the accuracy of a numerical model where the coherency solid fraction is used in the identification of diverse dendritic regions developing within a mushy zone during binary alloy solidification driven by diffusion and thermo-solutal buoyancy forces. It is shown that this critical value of a solid volume fraction is not constant but changes with time and along the border separating the regions.