.. _V7.31.151:

**v7.31.151** WTNV151 — Taking into account an unsaturated water exchange condition
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**Summary:**

The tests presented make it possible to verify that a water exchange term at the edge is correctly taken into account in the models AXIS_ *HH2*, D_ PLAN_ *HH2* and 3D_*HH2*. Under certain hypotheses, the problem is reduced to a purely hydraulic problem under capillary pressure. This problem is then written in the linear case (ECHANGE_THM) as a heat equation and can thus be the analogue of a thermal problem. The solution of the hydraulic problem is therefore compared to the solution of the thermal problem, for which the term exchange is already well taken into account.
The d, e, f models concern the validation of the non-linear exchange term in relative humidity (ECHANGE_THM_HR)


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    Mod_lisation_B
    Mod_lisation_C
    Mod_lisation_D
    Mod_lisation_E
    Mod_lisation_F
    Synth_se_des_r_sultats