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6.5.3 Hooking DEFINE_GRID_MOTION UDFs

Once you have interpreted (Chapter  4) or compiled (Chapter  5) your DEFINE_GRID_MOTION UDF, the name of the function you supplied as a DEFINE macro argument will become visible and selectable in the Dynamic Mesh Zones panel (Figure  6.5.3). To hook the UDF to FLUENT, you will first need to enable the Dynamic Mesh model.

Define $\rightarrow$ Dynamic Mesh $\rightarrow$ Parameters...

Select Dynamic Mesh under Model and click OK.

figure   

The Dynamic Mesh panel will be accessible only when you choose Unsteady as the time method in the Solver panel.

Next, open the Dynamic Mesh Zones panel .

Define $\rightarrow$ Dynamic Mesh $\rightarrow$ Zones...

Figure 6.5.3: Dynamic Mesh Zones
figure

Select User-Defined under Type in the Dynamic Mesh Zones panel (Figure  6.5.3) and click on the Motion Attributes tab. Choose the function name (e.g., beam) from the Mesh Motion UDF drop-down list. Click Create then Close.

See Section  2.6.3 for details about DEFINE_GRID_MOTION functions.


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© Fluent Inc. 2006-09-13