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6.8.12 Rotating the Grid

The ability to rotate the mesh is analogous to the ability to translate the mesh in FLUENT. You can rotate the mesh about the x, y, or z (for 3D) axis and also specify the rotation origin. This option is useful in the cases where the structural grid and the CFD grid are offset by a small angle.

You can rotate the grid in FLUENT using the Rotate Grid panel (Figure  6.8.12).

Grid $\rightarrow$ Rotate...

Figure 6.8.12: The Rotate Grid Panel
figure



Using the Rotate Grid Panel


The procedure for rotating the grid is as follows:

1.   Specify the required Rotation Angle for the grid. You can specify any positive or negative real number in the correct unit of angle.

2.   Under Rotation Origin, enter X, Y, and Z (for 3D) coordinates to specify a new origin for axis of rotation.

3.   Under Rotation Axis, enter 1 for the axis along which you want to rotate the grid.

4.   Click on Rotate button.

The Domain Extents will be updated to display the new extents of the rotated grid. (Note that the Domain Extents are purely informational; you cannot edit them manually.)


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