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中文摘要：
数字模拟基于阶段地方法被执行在免费或强迫的流动描述纯材料的团结过程。接口的进化被显示出，并且网孔格子的效果和 succinonitrite 形状上的流动速度被学习。这些结果显示水晶在免费流动并且进长成 equiaxial 树突一不均匀在强迫的流动树枝状。与增加流动速度，在上游的树枝状的手臂尖端变得更快，下游的手臂变得更慢。然而，垂直尖端的进化没有重要变化。另外，当网孔格子在 300 × 3 上面时，网孔格子没在树枝状的生长形状上有影响 00。
英文摘要：
Numerical simulation based on phase field method is performed to describe solidification process of pure material in a free or forced flow. The evolution of the interface is showed, and the effects of mesh grid and flow velocity on succinonitrite shape are studied. These results indicate that crystal grows into an equiaxial dendrite in a free flow and into an asymmetrical dendritic in a forced flow. With increasing flow velocity, the upstream dendritic arm tip grows faster and the downstream arm grows slower. However, the evolution of the perpendicular tip has no significant change. In addition, mesh grid has no influence on dendritic growth shape when mesh grid is above 300×300.
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