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利用宏观－微观耦合的模型和热焓法处理结晶潜热，用外节点直接差分法数值计算技术，模拟了Ａｌ－２ｗｔ％Ｃｕ合金凝固过程的冷却曲线和晶粒组织特征，并与实验结果进行了比较。结果表明：冷却速率越大的凝固区域，再辉出现得越早，平台凝固段越短。模拟所得冷却曲线和晶粒组织特征同实测值吻合较好。
The macroscopic and microscopic coupling models and the enthalpy method were used to process the latent heat of crystallization. The cooling curve and grain structure of the Al-2wt% Cu alloy during the solidification process were simulated with the numerical calculation method of the direct difference method of the outer nodes. The results were compared with the experimental results Compare The results show that the larger the cooling rate, the faster the solidification zone reappears and the shorter the solidification stage of the platform. The simulated cooling curves and grain structure characteristics are in good agreement with the measured values.