10.6 Steps in Using Rotating Reference Frames

The procedure for setting up and solving problems which involve rotating reference frames is outlined below, and described in detail in Sections  10.7 and 10.10. Only those steps relevant specifically to the setup of a rotating reference frame problem are listed here. You will need to set up the rest of the problem as usual.

1.   Select the Velocity Formulation in the General task page (Figure  10.6.1).

(Note that this step is irrelevant if you are using one of the density-based solvers; these solvers always use an absolute velocity formulation.)

General

Figure 10.6.1: The General Task Page with the Absolute Velocity Formulation Enabled

2.   Specify the translational or angular velocity in the dialog boxes of Walls, Fluids, Solids, Velocity Inlets, Mass Flow Inlets, etc.

Cell Zone Conditions

Figure 10.6.2: Wall Boundary Conditions Displaying the Rotational Velocity of the Moving Reference Frame

3.   Initialize the solution.

Solution Initialization

4.   Run the simulation until convergence.

Run Calculation

5.   Postprocess the results as described in Sections  10.9 and 10.12.