Adjust Part Normals
Use the Normals tool to identify and correct the surface normal directions on parts.
The surface normals play an important role within the Aerodynamics and Aeroacoustics meshing process. In order for a model to be properly meshed, all surfaces in the model should have normal directions that point from solid to fluid. In other words, the normals must point outwards when viewing the model from the exterior. The normals also play an important role when identifying regions that are assigned as custom refinement zones, MRF volumes, and heat exchanger volumes. In each of these cases, the input to Aerodynamics and Aeroacoustics should form a closed volume and all normals should be oriented such that they point outwards from the enclosed volume.
Normals operations can be performed on a part or a region basis. A part is any collection of elements that you define as being grouped together. These will appear in the Model Browser as a single entry in the tree. A region is a collection of elements that are all connected to each other and grouped into a part. Parts can be made up of one or more regions. If there is more than one region in a part, there will be groups of elements that are not connected to each other. If you select Region when performing a Normals operation, only the elements that are connected to that region are affected and the rest of the elements in the part are left as is. If you select Part, all regions of the part are affected at the same time.
Keyboard Shortcuts & Mouse Controls
To do this | Press |
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Adjust element normals in the selected isolated region | Shift + Left Mouse Click |