نتایج جستجو برای: unstructured meshes
تعداد نتایج: 27046 فیلتر نتایج به سال:
This paper describes an approach to construct unstructured tetrahedral and hexahedral meshes for a domain with multiple materials. We have developed an octree-based isocontouring method to construct unstructured 3D meshes for a single material domain. Based on it, we analyze each material change edge instead of sign change edge to figure out interfaces between two materials, and mesh each mater...
We present a generic algorithm for numbering and then efficiently iterating over the data values attached to an extruded mesh. An extruded mesh is formed by replicating an existing mesh, assumed to be unstructured, to form layers of prismatic cells. Applications of extruded meshes include, but are not limited to, the representation of 3D high aspect ratio domains employed by geophysical finite ...
A procedure is presented to untangle unstructured 2D meshes containing inverted elements by node repositioning. The inverted elements may result from node movement in Arbitrary Lagrangian–Eulerian (ALE) simulations of continuum mechanics problems with large shear deformation such as fluid flow and metal forming. Meshes with inverted elements may also be created due to the limitations of mesh ge...
The transport equation, in highly scattering regimes, has a limit in which the dominant behavior is given by the solution of a di usion equation. Angular discretization like the discrete ordinate method (SN ), the truncated spherical harmonic expansion (PN ) or also nonlinear moment models have the same property. For such systems it would be interesting to construct nite volume schemes on unstr...
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