为了提高充型模拟的计算精度,改进和修正了传统的用于模拟自由表面的"施-受体"算法,针对体积函数提出了新的处理自由表面的"三维施-受体"算法.为了检验新方法,对同一方块形验证铸件设计了两种不同浇注系统,并对其同时进行了水力模拟实验和数值模拟计算.数值模拟计算结果与水力模拟实验结果一致.研究表明:浇注系统几何形状对充型模式有重要影响;"三维施-受体"算法减少了计算误差,提高了计算精度,不仅能够准确地预测浇注系统对充型模式的影响,而且在评估和辅助浇注系统设计方面具有巨大潜力.
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