Added delp_dir and delp

docs/source/InputsProblemDefinition.rst

@@ -25,6 +25,18 @@ The following inputs must be preceded by "geometry."
 | prob_hi         | High corner of physical domain (physical not index space)             |   Reals     | None      |
 +-----------------+-----------------------------------------------------------------------+-------------+-----------+
 
+The following inputs must be preceded by "bc."
+
++-----------------+-----------------------------------------------------------------------+-------------+-----------+
+|                 | Description                                                           |   Type      | Default   |
++=================+=======================================================================+=============+===========+
+| delp_dir        | Direction for specified pressure drop. Note that this direction       |   Int       |   0       |
+|                 | should also be periodic.                                              |             |           |
++-----------------+-----------------------------------------------------------------------+-------------+-----------+
+| delp            | Pressure drop (Pa)                                                    |   Real      |   0.0     |
++-----------------+-----------------------------------------------------------------------+-------------+-----------+
+
+
 The following inputs must be preceded by "mfix."
 
 +----------------------+-------------------------------------------------------------------------+----------+-----------+