Technical Paper
Fast and Accurate Prediction of Vehicle Aerodynamics Using ANSYS Mosaic Mesh
2020-03-27
2020-01-5011
ANSYS Mosaic™ meshing technology automatically conformally connects different types of meshing elements with general polyhedron elements. Poly-Hexcore, the first application of the Mosaic technology, fills the volume region with octree hexahedra, boundary layer with the high-quality layered poly-prism and conformally connect these two meshes with general polyhedron elements. A generic vehicle model - the DrivAer car, developed at the Technical University of Munich (TUM) in cooperation with the Audi AG and the BMW group, is used to validate the Mosaic meshing technology to predict complex aerodynamic phenomenon around the car. The Mosaic meshing technology is parallel scalable on high-performance computing (HPC) platform. For example, on ANSYS HPC (CPU: 2x Intel(R) Xeon(R) Gold 6142 CPU @ 2.60 GHz, RAM: 192 GB (6 GB/core)), approximately 63 million element mesh is 6.5 times faster, when scaled from serial compute core to 32 parallel compute cores.
