The external surface of the geometry is displayed in the Graphics window. To view the internal surfaces and examine the boundary regions, we will make the geometry translucent.
Although the fan blades can now be seen through the translucent external walls, they are still very faint. This is because the two mesh regions making up the imported problem geometry are completely separated by pairs of wall boundaries. These boundaries will be transformed into proper inter-region interfaces in the section on Creating Interfaces. To view their location:
The wall boundary belonging to the Fluid region will be highlighted in pink in the geometry scene
The boundary belonging to the Rotating region will now be highlighted in the geometry scene. Note that it is coincident with the Interface2 boundary of the Fluid region.
Another pair of wall boundaries separating the rotating region from the fan's inlet section, will also be transformed into an interface.
Note that the two Interface1 boundaries are also coincident.
We will now remove the four interface wall boundaries from the geometry display to provide a clearer view of the internal surfaces.
The fan blades and the central axis are now clearly visible in the geometry scene.
The fan axis is partly in the Fluid region and partly in the Rotating region and is therefore split into two boundaries.
The two Axis boundaries will be highlighted in the geometry scene.
The rotational properties of the axis boundaries will be considered in the Setting Boundary Conditions and Values section. These properties will also be changed for the Walls boundary of the Rotating region, shown below.
