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Mesh generation for engine simulation is difficult and represents a significant bottleneck in the design flow. The typical engine CFD design project begins with a lengthy process to construct an adequate computational mesh of the engine geometry, which may include valves, spark plugs, ports, etc. The generated mesh must account for the fact that it must compress and stretch during the full engine cycle. The process of mesh creation can take up to weeks for a single design, making a design-of experiments that considers multiple geometries particularly challenging.
The FORTÉ mesh generator is fully automated and created a Cartesian mesh to assure that all boundary conditions are accurately enforced at the real physical boundaries. The automatic mesh generation capability works from the inside-out, removing issues that might occur when the CAD (e.g., STL) file contains small holes or discontinuities and eliminates the requirement for the imported surface-mesh files to be “water tight.” In addition, mesh refinement around exceptional features (like valves, etc) is accomplished automatically, with user control of the desired mesh size. Read more in this Application Note.