CAD upload

Method 2:

In the second method, you upload each region, subregion and boundary as a seperate STEP file. A new region can be uploaded by clicking on the "plus" sign next to regions. After selecting the relevant region type, the buttons to upload boundaries and subregions will appear in the region settings window.

On initial CAD upload, the naming of the geometries are handled automatically. The names of regions and subregions are read from the STEP file and assigned to respective entities.

Due to differences in geometry definition between different CAD softwares, names from some STEP files will not be read. In this case, a default naming format will be used: type number. Where 'type' can be either region, subregion or boundary. The numbering starts with 0. Within each region, the numbering is reset to 0 for subregions and boundaries.

In general, the platform requires input that finds a good balance in the level of detail that is present in the geometry input. Insufficient detail clearly limits the predictive value of simulations, whereas too much detail can hamper separating the important from the non-important.

Here are some guidelines for the level of detail:

• Take care of small features: small features will be captured as well as possible by a simulation, but the more small features, the harder the balance between capturing all of them and capturing the global picture. Leave small features only when they matter.
• Avoid “idealistic” or non-manufacturable” geometry, such as sliver surfaces, cusps, knife-edges, and similar degeneracies.
• Avoid excess realism in the form of geometric details such as embossed or engraved text, fasteners or separate screws.
• When having very thin surfaces or regions, consider simply removing them or replace them by a thermal interface.
• Make sure to give distrinct names to regions, subregions and boundaries.

The geometry is preferably oriented according to XYZ axes. This will improve the quality of the simulation.