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首页> 外文期刊>Journal of Computational Physics >A robust method for calculating interface curvature and normal vectors using an extracted local level set
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A robust method for calculating interface curvature and normal vectors using an extracted local level set

机译:一种使用提取的本地级别设置计算界面曲率和普通向量的鲁棒方法

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摘要

The level-set method is a popular interface tracking method in two-phase flow simulations. An often-cited reason for using it is that the method naturally handles topological changes in the interface, e.g. merging drops, due to the implicit formulation. It is also said that the interface curvature and normal vectors are easily calculated. This last point is not, however, the case in the moments during a topological change, as several authors have already pointed out. Various methods have been employed to circumvent the problem. In this paper, we present a new such method which retains the implicit level-set representation of the surface and handles general interface configurations. It is demonstrated that the method extends easily to 3D. The method is validated on static interface configurations, and then applied to two-phase flow simulations where the method outperforms the standard method and the results agree well with experiments.
机译:LEVEL-SET方法是两相流模拟中的流行接口跟踪方法。 使用的经常引用的原因是该方法自然地处理界面中的拓扑变化,例如, 折合滴,由于隐含的制定。 还说还可以容易地计算界面曲率和正常载体。 然而,最后一点不是拓扑变革期间的情况,因为若干作者已经指出。 已经采用了各种方法来规避问题。 在本文中,我们提出了一种新的这种方法,其保留了表面的隐式级别设置并处理了一般接口配置。 结果证明该方法容易延伸到3D。 该方法在静态接口配置上验证,然后应用于两相流模拟,其中该方法优于标准方法,结果与实验吻合得很好。

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