Note the following requirements and restrictions for the GT-Power coupling:
The flow must be unsteady.
The compressible ideal gas law must be used for density.
Each boundary zone for which you plan to define conditions using GT-Power must be a flow boundary of one of the following types:
mass flow inlet
Also, a maximum of 20 boundary zones can be coupled to GT-Power.
If a mass flow inlet or pressure inlet is coupled to GT-Power, you must select
Normal to Boundary as the
Direction Specification Method in the
Mass-Flow Inlet or
Pressure Inlet panel. For a velocity inlet, you must select
Magnitude, Normal to Boundary as the
Velocity Specification Method in the
Velocity Inlet panel.
Boundary conditions for the following variables can be obtained from GT-Power:
species mass fractions
(Note that it is recommended that you define these conditions in
FLUENT yourself, rather than using the data provided by GT-Power, since the GT-Power values are based on a 1D model.)
Make sure that the material properties you set in
FLUENT are the same as those used in GT-Power, so that the boundary conditions will be valid for your coupled simulation.
If your model includes species, make sure that the name of each species in GT-Power corresponds to the
Chemical Formula for that species material in the
Materials panel. Also, recall that
FLUENT can handle a maximum of 50 species.
You can install the GT-Power libraries in a directory other than the default location. If the GT-Power libraries are loaded into a non-default location, you need to set the following environment variables:
FLUENT_GTIHOME - the GTI installation directory where GT-Power is installed
FLUENT_GTIVERSION - the current version of the GTI installation