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59 lines
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ReStructuredText
59 lines
2.2 KiB
ReStructuredText
.. _about_hypo_page:
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****************
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About Hypotheses
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****************
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**Hypotheses** represent boundary conditions which will be taken into account by meshing algorithms. The hypotheses allow you to manage the level of detail of the resulting mesh: when applying different hypotheses with different parameters you can preset the quantity or size of elements which will compose your mesh. So, it will be possible to generate a coarse or a more refined mesh.
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The choice of a hypothesis depends on the selected algorithm.
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Hypotheses are created during creation and edition of
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:ref:`constructing_meshes_page`:"meshes" and
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:ref:`constructing_submeshes_page`:"sub-meshes".
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Once created a hypotheses can be reused during creation and edition of other meshes and sub-meshes. All created hypotheses and algorithms are present in the Object Browser in *Hypotheses* and *Algorithms* folders correspondingly. It is possible to open a dialog to modify the parameters of a hypothesis from its context menu. This menu also provides **Unassign** command that will unassign the hypothesis from all meshes and sub-meshes using it. Modification of any parameter of a hypothesis and its unassignment leads to automatic removal of elements generated using it.
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In **MESH** there are the following Basic Hypotheses:
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* :ref:`a1d_meshing_hypo_page` (for meshing of **edges**):
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* :ref:`number_of_segments_anchor`
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* :ref:`average_length_anchor`
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* :ref:`max_length_anchor`
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* :ref:`adaptive_1d_anchor`
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* :ref:`arithmetic_1d_anchor`
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* :ref:`geometric_1d_anchor`
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* :ref:`start_and_end_length_anchor`
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* :ref:`deflection_1d_anchor`
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* :ref:`automatic_length_anchor`
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* :ref:`fixed_points_1d_anchor`
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* :ref:`a2d_meshing_hypo_page` (for meshing of **faces**):
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* :ref:`max_element_area_anchor`
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* :ref:`length_from_edges_anchor`
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* :ref:`hypo_quad_params_anchor`
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* 3D Hypothesis (for meshing of **volumes**):
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* :ref:`max_element_volume_hypo_page`
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There also exist :ref:`additional_hypo_page`:
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* :ref:`propagation_anchor`
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* :ref:`propagofdistribution_anchor`
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* :ref:`viscous_layers_anchor`
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* :ref:`quadratic_mesh_anchor`
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* :ref:`quadrangle_preference_anchor`
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.. toctree::
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:maxdepth: 2
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1d_meshing_hypo.rst
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2d_meshing_hypo.rst
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max_element_volume_hypo.rst
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additional_hypo.rst
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