中文说明：应用背景matlab写的枝晶生长模拟程序，用来进行凝固行为的研究，没有耦合流场。是纯金属Ni的程序。其它纯金属的可以通过改变热物性参数进行调整。关键技术模拟二维情况下的晶粒演化，将计算区域离散为正方形网格，采用周期性边界条件。初始相场值为在（-0.001-0.001）之间服从正态分布的随机数，模拟中引入的第二相颗粒近似为圆形。模拟中参数如下：p=36，dx=l，dt=0．1，k=0．5，L=1.0，m=1．0，网格节点数为300x300
English Description：
Application backgroundMatlab to write the dendritic growth simulation program, used for the study of the solidification behavior, no coupled flow field. Is a pure metal Ni program. Other pure metals can be adjusted by changing the thermal physical parameters.Key TechnologyIn the simulation of the grain evolution, the computational domain is discretized into a square grid, using periodic boundary conditions. The initial phase field value is a random number which obeys normal distribution in (-0.001-0.001), and the second phase particles introduced in the simulation are round. The parameters of the simulation are as follows: dx=l, dt=0.1, p=36, k=0.5, L=1.0, m=1.0, the number of grid nodes is 300x300