Vortical Inviscid Flows with Two-Way Solid-Fluid Coupling
Vortical Inviscid Flows with Two-Way Solid-Fluid Coupling
复制标题
双向固液耦合的涡旋无粘流
DOI：
10.1109/tvcg.2013.95
复制
发表时间：
2014
影响因子：
5.2
通讯作者：
Won
中科院分区：
文献类型：
--
作者：
M. Vines;B. Houston;J. Lang;Won
涡流方法越来越多地受到计算机图形社区的关注，以简单而直接建模复杂的流动现象，例如湍流。自由形式固体之间的耦合，以任意表面网格为代表的自由形式固体以及用涡流方法模拟的流体导致视觉上富含的模拟。在本文中，我们介绍了一种新的方法，用于模拟使用拉格朗日涡流颗粒进行高质量模拟的固体与无粘性流体之间的相互作用。我们方法的关键方面是模拟在固体表面上的涡度产生。虽然以前的涡流模拟器仅专注于将固体作为流体边界建模，但我们的方法允许对两个视觉感兴趣过程进行准确的模拟。首先是主要流动中的表面涡度作为湍流（涡流脱落）。第二个是由流体力诱导的固体运动。我们还向计算机图形介绍了源面板的概念，以建模对象周围的非执性流程。据我们所知，这是使用计算机图形中Lagrangian Vortex方法的三固体和流体双向耦合的第一项工作。
Vortex methods increasingly receive attention from the computer graphics community for simple and direct modeling of complex flow phenomena such as turbulence. The coupling between free-form solids, represented by arbitrary surface meshes, and fluids simulated with vortex methods, leads to visually rich simulations. In this paper, we introduce a novel approach for simulating the interaction between solids and inviscid fluids for high-quality simulations using Lagrangian vortex particles. The key aspect of our method is simulating the creation of vorticity at a solid's surface. While previous vortex simulators only focus on modeling the solid as a boundary for the fluid, our approach allows the accurate simulation of two processes of visual interest. The first is the introduction of surface vorticity in the main flow as turbulence (vortex shedding). The second is the motion of the solid induced by fluid forces. We also introduce to computer graphics the concept of source panels to model nonturbulent flow around objects. To the best of our knowledge, this is the first work on two-way coupling of 3D solids and fluids using Lagrangian vortex methods in computer graphics.