The I data group is devoted basically to a definition of initial conditions for the global system. It supplements similar data read by subroutine READ1. Pressures are initialized within READ1 by assuming hydrostatic equilibrium with pressure PINIT at depth HINIT (READ R1-16). Temperatures are also initialized within that routine by linear interpolation from the table (ZT(I), TD(I)) (READ R1-11). The I records are read by subroutine INIT. The data obtained thereby may then be used to modify the initial pressure distribution to that appropriate for a natural flow within the reservoir. In this case, global boundary conditions prescribed in READ R1-28 for the up- and down-gradient faces of the system are respecified to their natural-flow values. In addition, both brine and radionuclide concentrations may be modified as desired from their default value of zero.
Reference: Reeves et al. [1986a], Section 5.1.
5.1 CONTROL PARAMETERS
If the initial concentrations are zero everywhere for both brine and radionuclides, and there is no natural flow, insert a blank record for READ I-1 and proceed to READ R1A-1.
READ I-1 (3I5)
5.2 INITIAL BRINE CONCENTRATIONS
Skip the following READ if ICOMP = 0. If ICOMP = 1, read as many records as necessary following the last record with a blank record.
READ I-2
(6I5, E10.0)
J1, J2 (Similar definition for the J index).
K1, K2 (Similar definition for the K index).
CINIT Initial brine concentration in
each of the blocks of the defined region, mass fraction.
5.3 INITIAL VELOCITY CONDITION
Reference: Reeves et al. [1986a], Section 5.1.1.
If INAT = 0, skip the following record.
READ I-3 (E10.0)
5.4 INITIAL RADIONUCLIDE CONCENTRATIONS
If IRD = 0, skip this READ. If IRD = 1, read as many records as necessary following the last record with a blank record. A total of NCP such sets of data are required, in the order of increasing component number, with a blank record terminating each set.
READ I-4 (6I5,E10.0)
J1, J2 (Similar definition for the J index).
K1, K2 (Similar definition for the K index).
CINIT Initial radionuclide concentration
for the component being entered, mass fraction.