FEB 2019, Luma Bendini

How to prepare the geometry for simulation?

Before you start a simulation, here are some instructions to prepare the model correctly and take the best out of a simulation with Ingrid Cloud. These instructions apply for Wind Load and Wind Comfort applications.

Topography and terrain

When the model is inserted inside the wind tunnel, Ingrid Cloud will find the lowest level of the geometry to set there the reference point for ground level. And the wind profile will interact with everything above that level.

So, if the geometry contains considerable volume underneath the area of interest, you have to take that away. Otherwise, the terrain will be understood as part of the model and will affect the wind behavior in a non-desirable way.

If you wish to include topography, the model must be a single solid volume. Read more about how Ingrd Cloud handles topography here.

Bottom plates and ground level

Wind Comfort and Wind Load applications simulate air flow in an urban environment, so the objects can’t be floating. All geometries and buildings must be placed on the same level.

Bottom plates are not welcome, make sure to place the geometry directly on the surface.

Detailed models

Remove small details. Features such as balconies and stairs have little or no influence on the results. Plus, less small details result in a faster simulation process.

As we are analyzing external wind flow behavior, all openings must be closed. Please, shut the doors and windows.

File format

Ingrid Cloud supports 11 different file formats. The best file format to use is STL, because there’s virtually no limit for file size. For all the other supported formats, a maximum of 50 megabytes is recommended.

Supported files:

  • STL
  • STEP
  • DXF
  • IGES
  • OBJ
  • LAS
  • 3DS
  • IFC
  • DWG
  • ASC