Unstructured Full-Hexahedral Meshing


HEXPRESS™ generates non-conformal body-fitted full hexahedral unstructured meshes on complex arbitrary geometries. In addition, the advanced smoothing capability provides high-quality boundary layers insertion.

HEXPRESS™ and HEXPRESS™/Hybrid use a similar volume-to-surface approach, suppressing the need for a surface mesh. Both systems run in batch or interactive mode and are interfaced to all major commercial CFD codes.

This product is part of AutoMesh™.

DLR-F6 airplane

Left: Turbo compressor meshed with a combination of HEXPRESS™ and AutoGrid5™ – Right: Brussels Rogier Center

Complex hub/propeller interaction (Courtesy of IHC Dredger International and ECN/CNRS) 


  • Full Hexahedral Grids (no prism, no tetrahedra, no pyramid)
  • Direct CAD import capabilities
  • CAD manipulation and decomposition tools
  • Mesh wizard for rapid solution set-up and easy back and forth operation
  • Buffer cell and boundary layer insertion for high quality cells in boundary layer regions
  • Automatic refinement procedures based on user defined sensors either next to solid walls or at specified area in the domain
  • Multi domain capabilities allowing the treatment of CHT and multi-part geometry models
  • Full non-matching multi-block connection, allowing multi-row turbomachinery meshing

Customization to User Specific Features

  • All commands python based and accessible through scripts
  • Users can develop their own scripts for batch mode operation into CAE design cycle or optimization loop.


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