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. Make sure that the reported minimum volume is a positive number.

2.   Examine the mesh (Figure  23.2).

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.

Figure 23.2: Mesh Display of the Fluidized Bed

3.   Enable the pressure-based transient solver.

General

(a)   Retain the default selection of Pressure-Based from the Type list.

  The pressure-based solver must be used for multiphase calculations.

(b)   Select Transient from the Time list.

4.   Set the gravitational acceleration.

General Gravity

(a)   Enter -9.81 m/s $^2$ for the Gravitational Acceleration in the Y direction.