采用元胞自动机法模拟凝固微观组织的研究进展

系统论述了元胞自动机(CA)方法模拟凝固微观组织的原理,同时介绍了这种方法在国内外的研究现状。实际上,国内外的研究主要经历了从晶粒结构到枝晶结构,从二维到三维、从没有流场到包含流场的逐步深入的发展历程。最后对CA方法的进一步研究方向提出建议,指出CA方法需要进一步完善现有模拟过程中所采用的生长动力学模型,同时可以将应用范围向半固态凝固领域拓展。

Progresses in Numerical Simulation of Solidification Microstructure Using Cellular Automaton Method

The basic principle of CA method and reviewed present research progress in domestic and foreign country were introduced.In fact,the research had developed from grain structure to dendrites structure,from 2-D to 3-D,and from field without convection to with convection.Furthermore,the tendency of study and development in the future is also suggested: existing model's growth kinetics needs to be improved,and application scope needs to be expanded to semi-solid solidification.