Update EB mixed BCs input parameters

.. code-block:: none

   bc.regions = inflow outflow hot-wall

   bc.regions = inflow outflow

   bc.inflow = mi

   bc.inflow.myfluid.volfrac     =  1.0

   bc.outflow = po

   bc.outflow.myfluid.pressure =  0.0

Boundary Conditions on Embedded Boundaries

------------------------------------------

In MFIX-Exa it is possible to set boundary conditions on the embedded

boundaries. For instance, it is possible to set inhomogeneous Dirichlet boundary

conditions for the fluid temperature variable on the subpart of the embedded

boundaries which is contained in the BC region (which in this case has to be

tridimensional). We recall that, on the remaining part of the EBs, homogeneous

Neumann boundary conditions are assumed by default.

In the following table there is a list of the possible entries for EB boundary

conditions. Each entry must be preceeded by `bc.[region0].`

+---------------------+-----------------------------------------------------------------------+-------------+-----------+

|                     | Description                                                           |   Type      | Default   |

+=====================+=======================================================================+=============+===========+

| eb.temperature      | Inhomogeneous Dirichlet BC value for temperature on EBs contained in  | Real        | 0.0       |

|                     | the (tridimensional) region [required if advect_enthalpy=1 and        |             |           |

|                     | bc_region_type='eb'].                                                 |             |           |

+---------------------+-----------------------------------------------------------------------+-------------+-----------+

Below is an example for specifying boundary conditions for a fluid `myfluid`.

.. code-block:: none

   bc.regions = hot-wall

   bc.hot-walls = eb

   bc.hot-walls.myfluid.eb_temperature = 800

   bc.hot-walls.eb.temperature = 800