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Showing 1 to 9 of 9 for “"hexahedral mesh"”.
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Domain decomposition for hexahedral mesh generation using singularity lines
Generating automatically a hexahedral mesh for a 3D domain of arbitrary complexity is a challenging problem that has puzzled the research community considerably. As opposed to tetrahedral mesh generation, there is no existing algorithm that can operate with the push of a button and produce the …
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Hamiltonian Paths and Strands for Unified Grid Approach for Computing Aerodynamic Flows
… a structured grid solver. A pure quadrilateral/hexahedral mesh is a prerequisite for the line identification and enables approximate factorization along the lines on the unstructured grid. Among various methods, subdivision is the easiest way to obtain a pure quadrilateral/hexahedral mesh from …
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Surpassing Local Optimality in Geometry Processing
… programming to target cross-field based quad meshing, hexahedral mesh quality enhancement, and algebraic collision detection. With these tools, we manage to avoid shallower local minima and sometimes to reach or even surpass globally optimal solutions. We conclude with some principles by which …
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A Selective Approach to Hexahedral Refinement of Unstructured Conformal Meshes
Hexahedral refinement increases the density of an all-hexahedral mesh in a specified region, improving numerical accuracy. Previous research using solely sheet refinement theory made the implementation computationally expensive and unable to effectively handle multiply-connected transition elements …
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Enhancing Hex-dominant Meshes: Generation, Evaluation, and Simplification
Hex-dominant mesh generation has recently received increasing attention from researchers and the simulation community due to its robustness compared to pure hex-mesh generation techniques. However, simulation algorithms require a limited number of cell types and mesh elements of desired quality to …
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Integrable symmetric fields in computational design : from stable woven shells to seamless parameterizations
… grand challenge of developing a robust hexahedral mesh generation package, and state of the art approaches employ a pipeline where this mesh generation process is guided by an orientation field. In each case, a powerful algorithmic pipeline involves first designing a continuous direction …
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Computationally-effective Modeling of Far-field Underwater Explosion for Early-stage Surface Ship Design
… and cavitation requires a high-level of mesh refinement to prevent numerical dispersion from discontinuities. Computation also becomes quite expensive for full ship-related problems due to the large fluid domain necessary to envelop the ship. The burden is aggravated by the need to …
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Role of pavements in urban energetics
… technique being used to generate a high-quality hexahedral mesh of the city. The urban canyon model was implemented using the open-source solver OpenFOAM and run with the pavement model in uncoupled and coupled modes. Results from the uncoupled showed that while pavements with higher albedo and …
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Spectral element mesh generation and improvement methods
Made available in DSpace on 2017-03-01T16:37:06Z (GMT). No. of bitstreams: 2 MITTAL-THESIS-2016.pdf: 6322867 bytes, checksum: ceeadf110747990a0a9d8d4edfd97f89 (MD5) LICENSE.txt: 4209 bytes, checksum: e320f9ba4f501ad2c60568d7212152e0 (MD5) Previous issue date: 2016-12-06