.. _U3.24.01:

**u3.24.01** 3D and 3D models_ DIAG thermal
====================================================

**Summary:**

This document describes for 3D and 3D_ DIAG thermal models:


* the degrees of freedom carried by the finite elements that support modeling,


* the related support meshes,


* the materials and loads supported,


* non-linear possibilities,


* test cases implementing models

3D modeling (phenomenon THERMIQUE) corresponds to finite elements whose support meshes are solid.

3D_ DIAG modeling covers the same possibilities as 3D and only differs from it for a thermal calculation where the thermal mass matrix is then diagonalized before resolution.


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Discr_tisation
    Chargements_support_s
    Possibilit_s_non-lin_aires
    Exemples_de_mise_en__uvre___cas-tests