凝固过程的数值模拟正在由宏观向微观转变.微观模拟不仅可以得到材料的凝固组织,而且还能为宏观模拟提供准确的潜热释放信息.针对目前微观组织模拟的研究现状,介绍了几种主要的模拟研究方法,如确定性模拟方法、随机性模拟方法和相场方法等,阐述了其主要特征和模拟微观组织时存在的优缺点.最后对微观模拟中现存的问题及发展方向作了分析.
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