Reconstruction of multi-material interfaces from moment data
Reconstruction of multi-material interfaces from moment data
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DOI：
10.1016/j.jcp.2007.12.029
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发表时间：
2008-05
期刊：
影响因子：
--
通讯作者：
V. Dyadechko;M. Shashkov
中科院分区：
文献类型：
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作者：
V. Dyadechko;M. Shashkov
流体矩法是目前流行的流体体积法的一种扩展，用于跟踪多材料流体流动中的材料界面。VoF方法跟踪逐单元的材料体积，并使用这些数据来重建混合单元中的界面。MoF方法更进一步，并且除了体积之外，还跟踪细胞状材料质心;这种方法为界面重建算法提供了足够多的信息。MoF算法通过最小化每个混合单元中的一阶矩的缺陷，以体积守恒的方式重建界面。在两种材料的情况下，该策略允许使用来自相邻单元的无材料体积数据在混合单元中构建线性界面。与VoF界面重建技术相比，MoF算法具有更高的精度和更好的分辨率，可以对内部和边界细胞进行统一处理。在本文中，我们将展示如何相同的管理原则（最小化的一阶矩缺陷）可以用来重建的情况下，多种材料的接口。
The moment-of-fluid (MoF) method is an extension of popular volume-of-fluid (VoF) technique for tracking material interface in multi-material fluid flows. VoF methods track the cell-wise material volumes and use these data for reconstructing the interfaces in mixed cell. The MoF method goes one step further and, in additional to the volumes, keeps track of the cell-wise material centroids; this approach provides sufficiently more information for the interface reconstruction algorithm. The MoF algorithm reconstructs interfaces in volume-conservative manner, by minimizing the defect of the 1st moment in each mixed cell. In case of two materials, this strategy allows to construct the linear interface in a mixed cell using no material volume data from the neighboring cells. Compared to the VoF interface reconstruction techniques, the MoF algorithm shows higher accuracy and better resolution, allows uniform processing of internal and boundary cells. In this paper we show how the same governing principle (minimization of the 1st-moment defect) can be used to reconstruct the interfaces in case of multiple materials.