Step 2: General Settings

General

1.   Check the mesh.

General Check

   ANSYS FLUENT will perform various checks on the mesh and will report the progress in the console. Ensure that the reported minimum volume is a positive number.

2.   Display the mesh (Figure  11.2).

General Display...

(a)   Select only rotor-blade, rotor-hub, rotor-inlet-hub, stator-blade, and stator-hub from the Surfaces selection list.

(b)   Click Display and close the Mesh Display dialog box.

Figure 11.2: Mesh Display for the Multistage Fan

Extra:   You can use the right mouse button to check which zone number corresponds to each boundary. If you click the right mouse button on one of the boundaries in the graphics window, its zone number, name, and type will be printed in the ANSYS FLUENT console. This feature is especially useful when you have several zones of the same type and you want to distinguish between them quickly.

3.   Retain the default solver settings.

General

4.   Define new units for angular velocity.

General Units...

  The angular velocity for this problem is known in rpm, which is not the default unit for angular velocity. You will need to redefine the angular velocity units as rpm.

(a)   Select angular-velocity from the Quantities selection list and rpm from the Units selection list.

(b)   Close the Set Units dialog box.