Use a Whirl () plot to create a plot of the mode shapes of rotors that are rotated about the rotors’ axes at discrete rotation intervals. The whirl plot varies the phase shift between 0 and 360 degrees. That phase shift is relative to the phase defined in the dataset used for the plot. This plot requires the Rotordynamics Module. Add a Color Expression subnode as needed. Right-click a 3D Plot Group to add this plot form the More Plots submenu.

Here you select the edges on which to plot a whirl plot. From the Selection list, select Manual to select edges directly in the Graphics window or in the list below, or select All edges.

By default the scaling of the whirl plot is automatic. Select the Scale factor check box and enter a scale factor in the associated text field if you want to use another scaling.

You can customize the whirl plot by changing the number of planes and rings in the plot. Enter a positive integer (or 0 for no planes or rings) in the Number of planes or Number of rings field. For the planes, select the colors to use as a color table from the Color table list. For the rings, select a color from the Color ring list (or choose Custom to define another color). Also, for the tubes (one for each plane), enter a Tube radius expression for the radius of the tube; click the Replace Expression button () to select a predefined expression to replace the current expression, or press Ctrl+Space to insert a predefined expression (SI unit: m). If needed, select the Radius scale factor check box to enter a scale factor in the associated text field.