The Non-Design Space Tool is an additional tool in case the Interface geometries are quite complicated and the Interface Tool cannot be used to create the according Non-Design thickness.
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To make sure the functional faces of the Non-Design Spaces are kept during the optimisation two options are available:
Create Interfaces for all functional surfaces of this Non-Design Space to make sure these faces are preserved during the optimisation. Therefore, it is valid to enter values of 0 as Non-Design Space thickness in the Interface Tool.
Activate the automatic Automatic Non-Design Growth. Please have a look here on how to activate this option.
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