Parent Command
> OBSERVATION

Subcommand
>>> ELEMENT

Description
This command selects thermophysical properties, which are so-called "secondary parameters" in TOUGH2, as an observation type. This observation type refers to an element. The secondary parameter refers to elements of TOUGH2 vector PAR (see Pruess [1991], Figure 2). The index ipar must be provided in the command line after a colon or through the fourth-level command >>>> INDEX. The fluid phase must also be identified. The phase name phase_name or phase number iphase, which depend on the EOS module being used, are listed in the iTOUGH2 header. They can be specified either on the command line or using the fourth-level command >>>> PHASE. The following table lists the thermophysical property addressed by ipar. Some of the properties can be selected using an alternative second-level command.

Example
> OBSERVATION
>> SECONDARY parameter No: 3
>>> ELEMENT: AA__5
>>>> ANNOTATION: gas viscosity
>>>> GAS PHASE
>>>> NO DATA
<<<<
<<<

See Also
>> MASS FRACTION | >> PRESSURE | >> SATURATION | >>>> PHASE | >>>> INDEX