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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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金属过冷熔体等轴枝晶生长的相场方法研究
, PP. 31-35
Keywords: 相场,模拟,金属熔体
Abstract:
在纯物质相场模型中,采用计算效率较高的邻界面点相场大梯度计算域控制法,模拟了纯金属在无量纲过冷度为0.55熔体中等轴枝晶的生长演化过程,得到与实验观察相符合的等轴枝晶生长规律,通过加入形式较简单的热扰动,产生了明显的二次枝晶臂,有的二次枝晶臂上还出现了三次枝晶臂.同时计算了枝晶晶轴尖端的无量纲生长速度和曲率半径,并求出Peclet数.计算结果与微观可求解理论和Ivantsov理论吻合良好.
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