FLAC
Last updated
Last updated
To run a coupled TOUGH-FLAC simulation, a data block FLAC (or ) must be introduced and present in the main input file. The block FLAC introduces material parameters and coupling options. It must be specified after the block ROCKS and contain two records for each rock type in the same order as in the block ROCKS, plus an additional record placed after the line containing the keyword FLAC.
FLAC Introduces material parameters and coupling options for TOUGH-FLAC3D coupling simulation
Record FLAC.1
Free format for 3 parameters, or Format(3I5).
IE_THM(I), I=1,3
IE_THM(1) Select creep mode (not implemented yet).
0: default mode
1: creep mode
IE_THM(2) Select porosity evolution model.
0: no mechanical induced porosity change.
1: mechanical-induced porosity change.
2: porosity change as a function of volumetric strain.
IE_THM(3) Select FLAC3D version.
6: call FLAC3D v6 from its default location.
7: call FLAC3D v7 from its default location.
9: call FLAC3D v9 from its default location (default).
Record FLAC.2
Free format for 8 parameters, or format (I10, 7E10.4)
IHM, HM(I), I = 1, 7
IHM Select permeability model.
0: permeability models defined in the Python script flac3d.py.
1: no mechanical induced permeability change.
2: Minkoff et al. (2004).
HM(I) Parameter values for selected permeability model.
Record FLAC.3
Free format for 8 parameters, or format (I10, 7E10.4)
ICP, CP_THM(I), I = 1, 7
ICP Select equivalent pore pressure model (Coussy, 2004).
3: Integral term is zero.
CP_THM(I) Parameter values for the model.
Used in: All EOS modules
Example:
FLAC //An example of block FLAC for an input file with three different rock types
0, 1, 7
1, 0.0*7
3, 0.0*7
1, 0.0*7
3, 0.0*7
1, 0.0*7
3, 0.0*7
The input for data block "FLAC" can also through "", a keyword for third-party software coupling input.