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48 lines
1.6 KiB
ReStructuredText
48 lines
1.6 KiB
ReStructuredText
.. _radial_quadrangle_1D2D_algo_page:
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***********************
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Radial Quadrangle 1D-2D
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***********************
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This algorithm applies to the meshing of 2D shapes under the
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following conditions: the face must be a full ellipse or a part of ellipse
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(i.e. the number of edges is less or equal to 3 and one of them is an ellipse curve).
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The resulting mesh consists of triangles (near the center point) and
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quadrangles.
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This algorithm is optionally parametrized by the hypothesis indicating
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the number of mesh layers along the radius. The distribution of layers
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can be set with any 1D Hypothesis. If the face boundary includes
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radial edges, this distribution is applied to the longest radial
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edge. If the face boundary does not include radial edges, this
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distribution is applied to the longest virtual radial edge. The
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distribution is applied to the longest radial edge starting from its
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end lying on the elliptic curve.
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If no own hypothesis of the algorithm is assigned, any local or global
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hypothesis is used by the algorithm to discretize edges.
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If no 1D hypothesis is assigned to an edge,
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:ref:`Default Number of Segments <nb_segments_pref>` preferences
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parameter is used to discretize the edge.
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.. image:: ../images/hypo_radquad_dlg.png
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:align: center
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.. image:: ../images/mesh_radquad_01.png
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:align: center
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.. centered::
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Radial Quadrangle 2D mesh on the top and the bottom faces of a cylinder
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.. image:: ../images/mesh_radquad_02.png
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:align: center
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.. centered::
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Radial Quadrangle 2D mesh on a part of circle
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**See also** a sample :ref:`TUI Script <tui_radial_quadrangle>`.
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