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首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >Moment of fluid interface reconstruction method in multi-material arbitrary Lagrangian Eulerian (MMALE) algorithms
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Moment of fluid interface reconstruction method in multi-material arbitrary Lagrangian Eulerian (MMALE) algorithms

机译：多材料任意拉格朗日欧拉（MMALE）算法中流体界面重构的矩

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摘要

A new Lagrangian interface evolution method to use in a multi-material ALE (MMALE) algorithm is proposed. The input data set for the method consists of the volume fractions after the Lagrangian step and the orientation-position of the interfaces before this step. In the present work, the moment of fluid (MoF) method is used at the end of the ALE cycle to provide required interface information for this method. Compared to traditional reconstruction methods, in addition to the volume fractions, the proposed method incorporates the configuration of the interfaces in the calculations. The effect of compressibility is also considered in prioritizing the materials. The capability of the method is assessed by testing its potential to track interfaces through large topology change, in the domains which contain two or more materials. Numerical results for these tough test problems provide enough evidence for the accuracy and robustness of the proposed method.
机译：提出了一种新的拉格朗日界面演化方法，用于多材料ALE（MMALE）算法。该方法的输入数据集由拉格朗日步骤之后的体积分数和该步骤之前的界面的取向位置组成。在当前工作中，在ALE循环结束时使用了流体矩（MoF）方法来提供此方法所需的界面信息。与传统的重建方法相比，除了体积分数外，该方法在计算中还包含了接口的配置。在对材料进行优先级排序时，还考虑了可压缩性的影响。通过测试其在包含两种或多种材料的域中通过大型拓扑更改来跟踪接口的潜力，可以评估该方法的能力。这些困难测试问题的数值结果为所提出方法的准确性和鲁棒性提供了足够的证据。

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