Automatic mesh update with the solid-extension mesh moving technique
Automatic mesh update with the solid-extension mesh moving technique
复制标题
DOI：
10.1016/j.cma.2003.12.046
复制
发表时间：
2004-05
影响因子：
7.2
通讯作者：
K. Stein;T. Tezduyar;R. Benney
中科院分区：
文献类型：
--
作者：
K. Stein;T. Tezduyar;R. Benney
在计算大位移流-结构相互作用时，我们采用了网格移动和按需重网格相结合的网格更新方法。对于复杂几何形状的问题，我们需要自动网格移动技术来减少重新网格划分的需要。我们还希望这些网格移动技术允许我们控制流体-结构界面附近的网格分辨率，以便我们能够更准确地表示边界层。在我们设计的网格移动技术中，节点的运动由弹性方程来控制，网格变形是根据单元大小和变形模式选择性地处理的。这正在帮助我们减少重新啮合的频率。利用本文提出的实体扩展网格移动技术，我们还能够限制放置在流固界面附近的薄层单元的网格变形。
In computation of fluid–structure interactions involving large displacements, we use a mesh update method composed of mesh moving and remeshing-as-needed. For problems with complex geometries, we need automatic mesh moving techniques that reduce the need for remeshing. We also would like that these mesh moving techniques allow us to control mesh resolution near the fluid–structure interfaces so that we can represent the boundary layers more accurately. In the mesh moving techniques we designed, the motion of the nodes is governed by the equations of elasticity, and mesh deformation is handled selectively based on element sizes and deformation modes. This is helping us reduce the frequency of remeshing. With the solid-extension mesh moving technique presented in this paper, we are also able to limit mesh distortion in thin layers of elements placed near fluid–structure interfaces.