Manual Page for Command >> INITIAL


Syntax
>> INITIAL (PRESSURE/: ipv)

Parent Command
> PARAMETER

Subcommand
>>> DEFAULT
>>> MATERIAL

Description
This command selects as a parameter the initial condition for all grid blocks associated with a certain rock type (TOUGH2 variable DEPU(ipv)) or default initial condition (TOUGH2 variable DEP(ipv)). Since boundary conditions are specified as initial conditions for inactive grid blocks or grid blocks with a large volume, this command can also be used to estimate boundary conditions. Initial conditions estimates cannot be provided for individual elements unless they have a unique material name associated with them. Estimating the first primary variable can be selected using keyword PRESSURE. All the other primary variables must be identified by number, i.e. by an integer ipv that follows a colon on the command line. Alternatively, ipv can be provided through command >>>> INDEX. The initial guess for the parameter is taken from TOUGH2 block PARAM.4, or should be provided by using commands >> GUESS or >>>> GUESS or >>>> PRIOR.

Example
> PARAMETER
>> INITIAL PRESSURE
>>> MATERIAL: BOUND
>>>> ANNOTATION: Boundary Pressure
>>>> scale pressures on boundary by constant FACTOR
<<<<
<<<

>> INITIAL condition for primary variable No.: 2
>>> MATERIAL : SAND1 DEFAU
>>>> ANNOTATION : Initial Saturation
>>>> VALUE
>>>> initial GUESS : 10.4
>>>> admissible RANGE: 10.01 10.99
<<<<
<<<
<<

See Also
-


Back to Command Index

Page updated: July 29, 1997