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76 lines
2.8 KiB
Plaintext
76 lines
2.8 KiB
Plaintext
/*!
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\page basic_meshing_algos_page Basic meshing algorithms
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\n The MESH module contains a set of meshing algorithms, which are
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used for meshing entities (1D, 2D, 3D) composing geometrical objects.
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<ul>
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<li>For meshing of 1D entities (<b>edges</b>):</li>
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<ul>
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<li>Wire Discretisation meshing algorithm - splits a wire into a
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number of mesh segments following any 1D hypothesis.</li>
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<li>Composite Side Discretisation algorithm - allows to apply any 1D
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hypothesis to a whole side of a geometrical face even if it is
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composed of several edges provided that they form C1 curve, have the
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same hypotheses assigned and form one side in all faces of the main
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shape of a mesh.</li>
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</ul>
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<li>For meshing of 2D entities (<b>faces</b>):</li>
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<ul>
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<li>Triangle meshing algorithms (Mefisto) - Faces are split into triangular elements.</li>
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<li>Quadrangle meshing algorithm (Mapping) - quadrilateral Faces are split into
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quadrangular elements.</li>
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</ul>
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\image html image123.gif "Example of a triangular 2D mesh"
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\image html image124.gif "Example of a quadrangular 2D mesh"
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<li>For meshing of 3D entities (<b>volume objects</b>):</li>
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<ul>
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<li>Hexahedron meshing algorithm (i,j,k) - 6-sided Volumes are split into
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hexahedral (cubic) elements.</li>
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<li>\subpage cartesian_algo_page</li>
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internal parts of Volumes are split into hexahedral elements forming a
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Cartesian grid; polyhedra and other types of elements are generated
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where the geometrical boundary intersects Cartesian cells.</li>
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</ul>
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\image html image125.gif "Example of a tetrahedral 3D mesh"
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\image html image126.gif "Example of a hexahedral 3D mesh"
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</ul>
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Some of 3D meshing algorithms also can generate 3D meshes from 2D meshes, working without
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geometrical objects. Such algorithms are
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<ul>
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<li>Hexahedron meshing algorithm (i,j,k),</li>
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<!-- <li>GHS3D meshing algorithm (commercial)</li> -->
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</ul>
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There is also a number of more specific algorithms:
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<ul>
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<li>\subpage projection_algos_page "for meshing by projection of another mesh"</li>
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<li>\subpage import_algos_page "for meshing by importing elements from another mesh"</li>
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<li>\subpage radial_prism_algo_page "for meshing geometrical objects with cavities"</li>
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<li>\subpage segments_around_vertex_algo_page "for defining the local size of elements around a certain node"</li>
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<li>\subpage prism_3d_algo_page "for meshing prismatic shapes"</li>
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<li>\subpage radial_quadrangle_1D2D_algo_page "for meshing special 2d faces (circles and part of circles)"</li>
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</ul>
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\ref use_existing_anchor "Use existing edges" and
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\ref use_existing_anchor "Use existing faces" algorithms can be
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used to create an 1D or a 2D mesh in a python script.
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\ref constructing_meshes_page "Constructing meshes" page describes in
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detail how to apply meshing algorithms.
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<br><b>See Also</b> a sample TUI Script of a
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\ref tui_defining_meshing_algos "Define Meshing Algorithm" operation.
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*/
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