EOS7

Table 24 Primary Variables of EOS7

Phase Conditions	PrV1	PrV2	PrV3	PrV4	PrV5	PrV6	PrV7	PrV8	PrV9	PrV10
Gas	Pg	Xg1	Xg2	Xg3	Xg4	Xbr_G	Xtr1	Xtr2	Xtr3	T
Aqueous	Pa	Xg1	Xg2	Xg3	Xg4	Xbr	Xtr1	Xtr2	Xtr3	T
Two-Phase	Pg	Sg+10	Xg2_G	Xg3_G	Xg4_G	Xbr	Xtr1_G	Xtr2_G	Xtr3_G	T
Two-phase (Alternative)	Pg	Sg+10	Xg2_A	Xg3_A	Xg4_A	Xbr	Xtr1_A	Xtr2_A	Xtr3_A	T

Table 24 shows the parameters of default and alternative initial conditions for EOS7. In the table, Pg and Pa are pressure for gas and aqueous phase respectively. Xgn and Xtrn are the gas n and tracer n mass fractions in the existing phase, respectively. T is temperature. Xbr is brine mass fraction in aqueous phase. Xgn_G and Xtrn_G are the gas n and tracer n mass fractions in the gas phase excluding water vapor, respectively. Xgn_A and Xtrn_A are the gas n and tracer n mass fractions in the aqueous phase, respectively. Xbr, Xg2-Xg4, Xtr1-Xtr3 are optional. They are required only when the corresponding component exists in the model.

User can use other set parameters as the initial conditions through defining initCType in input data record MODDE.1 or command line –i <parameter>

initCType =

"EOS7" reading the TOUGH3/EOS7 input files.

"EOS7R" reading the TOUGH3/EOS7R input files.

"EOS7C" reading the TOUGH3/EOS7C input files.

"EOS7CA" reading the TOUGH3/EOS7CA input files.

"EOS7MG" reading the TOUGH3/EOS7MG INCON files, 2 lines for each element.

"EOS7MG1L" reading the TOUGH3/EOS7MG INCON files, 1 line for each element.

"SPEOS7” using alternative parameters for two-phase condition (Table 24, last row).