Unfortunately, these rules only apply to quadrilateral meshes with tensor product topology (i.e. each interior vertex is shared by four quadrilaterals). 作者说,简单的四边形细分规则,只能应用于张量积形式的拓扑(作者举了一个例子,就是内部点,周围有四个顶点。) 文章优点 可以应用于非流形拓扑,证明了这种...
According to the existing hexahedralbased, approximation scheme over simple or rough hexahedral meshes it is difficult to get the solid models which designers want to model without using some special rules. We devise a set of solid subdivision rules to facilitate a simple subdivision procedure. In ...
vision rules for hexahedral meshes. Subdivision algorithms inher- ently have several key properties that make them very attractive in computer graphics, engineering, and manufacturing. Some of these advantages include: • Uniformity of representation, ...
standard finite element methods (FEM) can be employed to run numerical simulations. Computing meshes from MCAD B-rep, which are suitable for numerical simulation, is not trivial due to the sloppiness of the geometric description, and the trimmed...
The e ow domain is discretized using unstructured hybrid grids that can contain a mixture of hexahedral, pentahedral, tetrahedral, and triangular prismatic cells. The e ow equations are discretized using a node-centered e nite volume scheme that relies on representing the mesh using an edge-based...
20%, yielding hex-dominant meshes with 70% to 90% hexahedron volume ratio. Keywords: hex-dominant mesh, topological transformation 1. INTRODUCTION This paper describes a new method for increasing the number and the volume of hexahedral elements in a hex- ...
For the sake of clarity, and because this is the nomenclature used in Pmarc-12, hexahedral scan volumes will be referred to as "rectangular," even though their sides are not necessarily orthogonal. To display scan volumes, click on the appropriate icon in the toolbar. The parameter being ...
According to the existing hexahedralbased, approximation scheme over simple or rough hexahedral meshes it is difficult to get the solid models which designers want to model without using some special rules. We devise a set of solid subdivision rules to facilitate a simple subdivision procedure. In ...
MFEM-1 and MFEM-2 use regular hexahedral grids, while MFEM-3, MFEM-4, and MFEM-5 use unstructured tetrahedral grids. Apart from the different grid types, these meshes also vary in density. Among them, MFEM-5 uses an adaptive algorithm based on a posteriori error estimates to generate the...
Spectral element method for 3-D controlled-source electromagnetic forward modelling using unstructured hexahedral meshes. Geophys. J. Int. 2022, 232, 1427–1454. [Google Scholar] [CrossRef] Tong, X.Z.; Sun, Y.; Zhang, B.Y. An efficient spectral element method for two-dimensional ...