Technique for converting non-conforming hexahedral-to-hexahedral interfaces into conforming interfaces
| DWPI Title: Computer implemented method of conforming interfaces between meshes such as hexahedral meshes, involves performing column collapse operations within one mesh to localize changes within mesh to depth parameter about interface |
| Abstract: A technique for conforming an interface between a first mesh and a second mesh is disclosed. A first interface surface in the first mesh and a second interface surface in the second mesh residing along the interface are identified. The first and second interface surfaces are initially non-conforming along the interface. Chords within the first and second interface surfaces that fall within a threshold separation distance of each other are paired. Sheets having chords that reside within the first or second interface surfaces are recursively inserted into or extracted from one or both of the first and second meshes until all remaining chords within the first interface surface are paired with corresponding chords in the second interface surface and all remaining chords within the second interface surface are paired with corresponding chords in the first interface surface. |
| Use: Computer implemented method of conforming interfaces between meshes such as hexahedral meshes. |
| Advantage: The artificial constraints which introduce additional equations to the system and increase the amount of time required to solve the system are eliminated. Thus the process of conforming interfaces between meshes ensures inter-element continuity in the finite element shape functions resulting in a smooth and accurate interpolation of the numerical solution. |
| Novelty: The method involves identifying interface surfaces in the meshes. Chords within the interface surfaces that fall within a threshold separation distance of each other are paired. Unpaired chords within the interface surfaces are identified. Sheets within meshes are recursively inserted or extracted. A depth parameter is set in one mesh, which indicates how many layers of elements are permitted within the mesh changes. Column collapse operations are performed within one mesh to localize changes within the mesh to the depth parameter about the interface. |
| Filed: 3/4/2009 |
| Application Number: US2009397566A |
| Tech ID: SD 10942.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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