B modeling
==============


Characteristics of modeling
-----------------------------------

The characteristics of the simulation are identical to those of the modeling above but the interface becomes impermeable transversely. The hydraulic Lagrange multipliers that control pressure equality across the interface are required to be equal to zero. To do this, we use the AFFE_CHAR_CINE command with the MECA_IMPO keyword to set the degree of freedom :math:`\mathrm{LH1}` to 0 on the crack.


Tested sizes and results
------------------------------

The figure shows the pressure profiles along vertical section :math:`x=4m` at various points in time. It is clear that there is no exchange between the two mountains and the crack. Moreover, the pressure fronts advance at a different speed in each massif due to the difference in permeability.


.. image:: images/Object_7.png
    :width: 6.1299in
    :height: 4.0717in


.. _RefSchema_Object_7.png:

Figure 4.2.1: Gas pressure profiles along a vertical section (x=4 m)

The following non-regression tests are carried out:


.. csv-table::

    ":math:`X(m)` "," :math:`Y(m)` ", "**Time (years)**", ":math:`\mathrm{PRE1}(\mathrm{Pa})` **Aster**"
    "4.23", "2.35", "200", "1.073E+05"
    "4.23", "2.35", "1000", "1.13E+05"
    "3.92", "-2.58", "200", "1.0041E+05"
    "3.92", "-2.58", "1000", "1.0539E+05"
    "4.0", "0.0", "200", "1.1473E+05"
    "4.0", "0.0", "1000", "1000", "1.1477E+05"