EOS3

Table 21. Primary Variables of EOS3

Phase Conditions	PrV1	PrV2	PrV3	PrV4	PrV5	PrV6
Gas	Pg	Xair	Xtr1	Xtr2	Xtr3	T
Aqueous	Pa	Xair	Xtr1	Xtr2	Xtr3	T
Two-Phase	Pg	Sg+10	Xtr1	Xtr2	Xtr3	T

Table 21 shows the parameters of default initial conditions for EOS3. In the table, Xtrn is tracer n mass fraction in the user specified phase. Pg and Pa are pressure for gas and aqueous phase respectively. T is temperature. Xair is air mass fraction in existing phase. 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.

“EOS7" reading the TOUGH3/EOS7 input files, neglect the brine.