EOS4
Table 22. Primary Variables of EOS4
Phase Conditions
PrV1
PrV2
PrV3
PrV4
PrV5
PrV6
Gas
Pg
Pair
Xtr1
Xtr2
Xtr3
T
Aqueous
Pa
Pair
Xtr1
Xtr2
Xtr3
T
Two-Phase
Pg
Sg
Xtr1
Xtr2
Xtr3
Pair
Table 22 shows the parameters of default initial conditions for EOS4. In the table, Xtrn is tracer n mass fraction in the user specified phase. Pair is air partial pressure. Pg and Pa are pressure for gas and aqueous phase respectively. Sg is gas saturation. T is temperature. Xtr1-Xtr3 are optional. They are required only when the corresponding tracer component exists in the model.
User can use alternative set parameters as the initial conditions through defining initCType in input data record MODDE.1 or command line –i <parameter>
initCType =
“EOS3” reading the TOUGH3/EOS3 input files.
“EOS4” reading the TOUGH3/EOS4 input files.