1. Reference problem

1.1. Geometry

Fig. 1.1 height: \(h=1\) m, width: \(l=1\) m, thickness: \(e=1\) m

1.2. Material properties

The values used for the sixteen parameters of the Barcelona model are given in v7.31.123-parametres_barcelone.

The properties of fluids (dry gas and liquid water) and of diffusion within the solid skeleton, necessary to solve the coupled calculation LIQU_GAZ, are presented in Section 1.3.

1.3. Boundary conditions and loads

The capillary pressure remains constant at the value \(\mathrm{PRE1}={200}\) kPa. Likewise, the gas pressure is set to \(\mathrm{PRE2}={1}\) Pa. In the first phase of loading, isotropic compression is carried out until the average stress \(\sigma_m=-200\) kPa is reached. In the second phase, triaxial compression is carried out, during which the stress normal to the lateral faces remains equal to \(-200\) kPa, while increasing the displacement on the upper face in the compression direction (Fig. 1.1).