.. _InputsDomain:

Defining the domain
===================

All simulations, whether using an embedded boundary (EB) or not, are specified on a simple cuboid domain. The
low and high corners of the cuboid are defined by the ``prob_lo`` and ``prob_hi`` inputs.

The following inputs are defined using the ``geometry`` prefix.

.. _InputsTable_domain:

+-----------------+-----------------------------------------------------------------------+-------------+-----------+
|                 | Description                                                           |   Type      | Default   |
+=================+=======================================================================+=============+===========+
| coord_sys       | Coordinate system used in simulation. Only Cartesian coordinates      |   Int       |   0       |
|                 | (``coord_sys = 0``) are supported.                                    |             |           |
+-----------------+-----------------------------------------------------------------------+-------------+-----------+
| is_periodic     | 1 for true, 0 for false (one value for each coordinate direction)     |   Int       | 0 0 0     |
+-----------------+-----------------------------------------------------------------------+-------------+-----------+
| prob_lo         | Low corner of physical domain (physical not index space)              |   Reals     | 0 0 0     |
+-----------------+-----------------------------------------------------------------------+-------------+-----------+
| prob_hi         | High corner of physical domain (physical not index space)             |   Reals     | 0 0 0     |
+-----------------+-----------------------------------------------------------------------+-------------+-----------+

.. attention::

   MFIX-Exa geometry restrictions:

   * There is **no support** for 1D or 2D simulation domains.
   * Cartesian is the **only supported** coordinate system.