Automating Preprocessing for Design and Analysis


Importing CAD for analysis can be a significant hurdle for an analyst. CAD data can have gaps and loose tolerances which can require tedious manual intervention to correct before launching into mesh generation and simulation activities. CAPRI CAE Gateway simplifies the path to go from CAD to a discrete representation. The process is robust and virtually hands-off, requiring little or no manual intervention to move your CAD model to your preprocessing environment.

Import from CAPRI CAE Gateway is guaranteed to be “watertight” for valid solids in all our supported CAD packages. This means there are no cracks or duplicate edge in the representation. No healing or repair is required before meshing. CAPRI CAE Gateway does not translate the CAD model, which ensures accuracy for simulation and associativity with the CAD topology which is crucial for updating boundary conditions and simulation attributes during an iterative design process.

CAPRI CAE Gateway is being successfully used with a wide range of meshing algorithms ranging from specialized structured block, chimera overset, cartesian to fully unstructured meshes.

 
  • Automating Preprocesing Slide 1
    A watertight representation of this complex aircraft was automatically generated and imported into NASA Cart3D CFD software. Image courtesy of M. Aftosmis.
  • Automating Preprocesing Slide 2
    Preprocessing time was decreased from weeks to hours for this complex aircraft. Photos courtesy of Cessna and Simcenter.
  • Automating Preprocesing Slide 3
    Automatic CAD import for creating overset meshes in NASA Chimera Grid Tool. Photo courtesy of Hawker Beechcraft.
  • Automating Preprocesing Slide 4
    Easily to automate import into turbomachinery meshers.
  • Automatic Preprocessing Slide 5
    Structured block meshing of aircraft configurations using CAPRI CAE Gateway. Images reference: Wood et al., CASI Aeronautics Conference, 2011.