First, the basis thought of microstructure simulation has been brief introduced; and then introduced the 3D dendrite envelop tracking simulation, this method is for simulating casting of unidirectional solidification which is sensitivity to vice.

• 简介了微观组织模拟的基本思路，引进三维枝晶包膜跟踪模拟理论，它是一种定向凝固的数值微观组织模拟方法，主要用于模拟一些特殊的对缺陷的存在很敏感的零部件。