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Launch Fluent

To launch FLUENT, first double click Setup under Project Schematic.

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These are the same zones described previously, when creating the mesh interfaces. We will have to edit parameters for each of them.

fluid-surface_body

Highlight fluid-surface_body and click "Edit...".

No options should be selected here, and the material must be set to air. This is the default. You can verify that and click Ok.

inner

Highlight inner and click "Edit...". Here we will set that the inner portion of the hub is spinning, adding more terms to the equations to account for local acceleration, even though the mesh is not actually moving.

Right under "Material Name", select the first option "Frame Motion". We want to specify the angular velocity and the origin about which the mesh turning.

From the geometry, the centroid is the global origin (0,0). Verify that that's inputted.

From the problem statement, the turbine is spinning at 40rpm, so go ahead and input 40 to "Rotational Velocity". This is the absolute velocity. Note that "absolute" is selected under "Relative Specification". 

The rest you can keep as default. Click Ok.

FIGURE 11

blades

Highlight blade_top and click "Edit...". 

Again, select "Frame Motion" option. Now, in order to make the blades rotate and keep the same relative position to the hub, select the "inner" Cell Zone under "Relative Specification". The relative velocity will be zero.

We need to do some basic geometry to find the rotating center.

MAYBE it's to big? Video...? 

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