Computational geometry is the most critical component of parametric modelling and the CAE automation process. We manipulate and process geometric entities on platforms like Autodesk Forge as well as on open-source kernels like OpenCascade. Our team builds applications that perform Boolean operations on imported STLs or generate design outputs in DXFs. Our experience with meshing algorithms allows us to deliver unstructured, multi-block or Octree grids for numerical solvers.

Meshing

Mesh Automation

Custom Meshing Software

Integration with CAD/CAE Software

Dynamic Meshing

Hybrid Meshing

Computer-Aided Design (CAD) is the process of designing the geometry of products on computers. Inside CAD software, geometric models are defined as shapes in mathematical form. The solid modelling library used by CAD software for handling and operations on geometrical shapes is called Kernel. Commercial Geometric Kernels available are Parasolid, ACIS, and Granite. These kernels are used in advanced commercial CAD software. An open-source option for geometric kernel is Open Cascade. This kernel is used in open-source CAD software such as FreeCAD, SALOME and Gmsh.

In CAD software, curves and surfaces are represented by Non-Uniform Rational B-Spline (NURBS). Computer graphics software additionally can represent curves using Bezier Curves and Splines. The most common file format used by CAD software is IGES and STEP file format. The STL format represents the CAD file using only unstructured triangulated surfaces. Attributes such as colour, texture, etc. are not represented in STL formats. There exist two major types of mesh viz. Structured Mesh and Unstructured Mesh. The structured mesh makes use of hex elements (quad elements in 2D). It follows a uniform pattern throughout the model. The unstructured mesh makes use of tetra elements (triangular elements in 2D). Unstructured mesh does not follow any uniform pattern.