7.7.2 User Inputs

The procedure for setting up the GT-Power coupling in ANSYS FLUENT is presented below.

1.   Read in the mesh file and define the models, materials, and boundary zone types (but not the actual boundary conditions), noting the requirements and restrictions listed in Section  7.7.1.

2.   Specify the location of the GT-Power data and have ANSYS FLUENT use them to generate user-defined functions for the relevant boundary conditions (using the 1D Simulation Library dialog box, shown in Figure  7.7.1).

Define $\rightarrow$ User-Defined $\rightarrow$ 1D Coupling...

Figure 7.7.1: The 1D Simulation Library Dialog Box

(a)   Select GTpower in the 1D Library drop-down list.

(b)   Specify the name of the GT-Power input file in the 1D Input File Name field.

(c)   Click the Start button.

When you click Start, GT-Power will start up and ANSYS FLUENT user-defined functions for each boundary in the input file will be generated.

3.   Set boundary conditions for all zones. For flow boundaries for which you are using GT-Power data, select the appropriate UDFs as the conditions.

Note that you must select the same UDF for all conditions at a particular boundary zone (as shown, for example, in Figure  7.7.2); this UDF contains all of the conditions at that boundary.

Figure 7.7.2: Using GT-Power Data for Boundary Conditions

4.   If you plan to continue the simulation at a later time, starting from the final data file of the current simulation, specify how often you want to have the case and data files saved automatically.

Calculation Activities(Autosave Case/Data) Edit...

To use a GT-Power restart file to restart an ANSYS FLUENT calculation, you must edit the GT-Power input data file. See the GT-Power User's Guide for instructions.

5.   Continue the problem setup and calculate a solution in the usual manner.