Abstract
Parallel computing is used in automotive industry for complex computational fluid dynamics (CFD) simulations since years and can be considered as state of the art for all applications with non moving meshes and a fixed grid topology. The widely used commercial CFD packages show an acceptable performance on massively parallel computer systems. The digital simulation of the product in all design stages is a key technology for the rapid evaluation of different designs in the early design phase. CFD applications are beside crash simulation the most demanding and computationally intensive application in automotive development. CFD is used for a wide range of problems including external aerodynamics, climate systems, underhood flows and the flow and combustion process in engines. Most commercially available CFD codes are implemented efficiently on MPP systems at least for non moving meshes. Even for complex moving mesh models, as they are used for the simulation of flows in internal combustion engines excellent speed-ups were demonstrated recently on MPP systems and a parallel efficiency of 84 % on 96 nodes of a Cray T3E-900 was achieved within the ESPRIT Project 20184 HPSICE. VR offers an intuitive way to analyze 3D simulation results and even direct interaction with simulation models in VR can already be demonstrated for selected test cases. Whereas considerable progress has been achieved in accelerating the simulation process, the integration of computer-aided design(CAD) and computer-aided engineering (CAE) should be improved in the future.
Published Version
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