In the blade-to-blade view, some parts of the mesh might appear to be distorted, wavy, or overlapping[1]. You might be able to reduce the amount of distortion by selecting an appropriate command in the Blade-to-Blade View submenu. Each command affects the portion of the geometry on which the transform is based. The optimal choice depends on the blade geometry.
The Blade-to-Blade View submenu commands are:
Use Default Transform
The Use Default Transform command chooses the transform method automatically by effectively choosing either the Use Full Transform command or the Use Passage Transform command.
Use Full Transform
The Use Full Transform command causes the blade-to-blade coordinates to be calculated using the complete hub and shroud curves.
Use Passage Transform
The Use Passage Transform command causes the blade-to-blade coordinates to be calculated using the portion of the hub and shroud curves that fall within the passage mesh, truncated at the inlet and outlet (that is, excluding the portions of the hub and shroud curves that lie within the inlet and outlet domains).
Use Passage Excluding Tip Transform
The Use Passage Excluding Tip Transform command is similar to the Use Passage Transform command, except that the tip regions are excluded in the spanwise direction. For example, if a blade has no hub tip and a profile-based shroud tip, the blade-to-blade coordinates are calculated using the portion of the hub curve that falls within the passage and the profile curve at the shroud tip. This transform may be the best choice if the hub/shroud tip is defined by a profile that varies significantly from a constant span when viewed in the other transforms.
The Passage and Passage Excluding Tip transforms:
usually exhibit less distortion than the Full transform,
are available only after the topology has been created,
cause geometry objects to be omitted from the blade-to-blade view (even if these transforms are used indirectly via the default transform).
[1] By contrast, the Cartesian view does not typically exhibit distortion, except at extremely high zoom levels.