‎ Geometry Tessellation

 

All geometry in Detect3D and in:Flux is a collection of triangles. In general, fewer triangles in a geometry leads to faster computation time. The conversion of complex surfaces into a set of triangles is called "tessellation." Very often, the default settings for which CAD programs export are not appropriate for Detect3D or in:Flux and will lead to overly detailed geometry.

 

In general, the smaller an object is the less important it becomes to the accuracy of the fire and gas mapping simulation. It is wasteful for computation time to use 500,000 triangles resolving small equipment such as nuts and bolts on flanges when we care about the ventilation of an entire facility or a 1ft x 1ft n-heptane fire. 

 

Spending time to reduce the number of triangles in the geometry will be time well-spent to significantly increase computation speeds.

 

Note that even If you convert a CAD file using external software, you have control over how many triangles are created.

 

This section will go into how to properly use the triangle reduction capability in Detect3D and in:Flux.

 

 

Contents of Geometry Tessellation:

• Triangle Reduction Algorithm

• Tessellation Comparison

• Tessellation Conclusions