Operands for thermal options
----



Operand THERMIQUE
~~~~


.. code-block:: text

    | 'FLUX_ELGA'
    | 'FLUX_ELNO'
    | 'NODE_FLOW'

Calculation of heat fluxes from temperature.

List of field components:


+-------------------------------------+---------------------------------------------------------------------------+
|FLUX FLUY FLUZ                       |Heat flow in the three directions of space (in the middle sheet for shells)|
+-------------------------------------+---------------------------------------------------------------------------+
|Additional components for the shells:                                                                            |
+-------------------------------------+---------------------------------------------------------------------------+
|FLUX_INF FLUY_INF FLUZ_INF           |Heat flow in the three directions of space in the lower skin               |
+-------------------------------------+---------------------------------------------------------------------------+
|FLUX_INF FLUY_INF FLUZ_INF           |Heat flow in the three directions of space in the upper skin               |
+-------------------------------------+---------------------------------------------------------------------------+

.. code-block:: text

    | 'GRAT_ELGA'
    | 'THANK_ELNO'
    | 'THANK_NOEU'

Calculation of temperature gradients.

List of field components:

+--------------------+-----------------------------------------------------+
|GRAT_X GRAT_Y GRAT_Z|Temperature gradient in the three directions of space|
+--------------------+-----------------------------------------------------+

.. code-block:: text

    | 'HYDR_NODE'

Hydration calculation.

List of field components:


.. csv-table::

    "HYDR ", "Hydration"


note
    The field 'HYDR_ELNO' is calculated natively by the non-linear thermal operator THER_NON_LINE for modeling concrete [:external:ref:`R7.01.12 <R7.01.12>`].


.. code-block:: text

    | 'SOUR_ELGA'

Calculation of a heat source.

List of field components:

.. csv-table::

    "SOUR ", "Heat source"

This source is calculated from an electrical potential via Ohm's law. This electrical potential must have been calculated by the operator THER_LINEAIRE [:external:ref:`U4.54.01 <U4.54.01>`] by making the necessary analogies. This source can then be used in a thermal calculation via the SOUR_CALCULEE keyword of the AFFE_CHAR_THER [:external:ref:`U4.44.02 <U4.44.02>`] command.


.. code-block:: text

    | 'ETHE_ELEM'

Calculation of thermal energy at equilibrium from the temperature field :math:`T`.

List of field components:


.. csv-table::

    "TOTALE ", "Thermal energy"