水-水相互作用的稳健体积守恒方法
A Robust Volume Conserving Method for Character-Water Interaction
摘要：
我们提出了一种新的体积守恒框架的字符-水的相互作用，使用一种新的体积的流体求解器上的皮肤四面体网格，使高度的空间自适应性，以捕捉薄膜和头发-水的相互作用。为了提高效率，流体体积的大部分是用标准欧拉求解器模拟的，该欧拉求解器使用快速、鲁棒且直接的分区方法双向耦合到我们的蒙皮任意拉格朗日-欧拉网格。这允许流体体积求解器的专门且有效的处理，因为它仅在域的子集中需要。流体体积守恒和运动学变形蒙皮网格的结合使我们能够稳健地实现有趣的效果，例如粘附力和各向异性孔隙率。我们说明了我们的方法的有效性，通过模拟各种水的效果与固体物体和动画人物。
英文摘要：
We propose a novel volume conserving framework for character-water interaction, using a novel volume-of-fluid solver on a skinned tetrahedral mesh, enabling the high degree of the spatial adaptivity in order to capture thin films and hair-water interactions. For efficiency, the bulk of the fluid volume is simulated with a standard Eulerian solver which is two way coupled to our skinned arbitrary Lagrangian-Eulerian mesh using a fast, robust, and straightforward to implement partitioned approach. This allows for a specialized and efficient treatment of the volume-of-fluid solver, since it is only required in a subset of the domain. The combination of conservation of fluid volume and a kinematically deforming skinned mesh allows us to robustly implement interesting effects such as adhesion, and anisotropic porosity. We illustrate the efficacy of our method by simulating various water effects with solid objects and animated characters.
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