面向高性能工业仿真的交互可视分析引擎

Interactive Visual Analysis Engine for High-Performance CAE Simulations

针对大规模仿真数据对仿真设计分析造成的前后连贯交互力弱、可视交互力低的问题,提出一个面向高性能工业仿真的交互可视分析引擎.首先构建可高效耦合几何模型和计算网格的三维混合数据模型;然后提出面向前后连贯仿真设计的并行可视分析流程;最后通过体网格外表面提取的图元数据轻量化方法,耦合GPU真实感绘制,以支撑实时高质量的仿真设计与分析.该引擎已集成到国产航空发动机仿真软件中,结果表明,可流畅地支持大规模仿真应用的设计分析,Trent-1000发动机模型数千万非结构网格的一键导入交互性能高出ANSYS商业软件8倍以上.

Large-scale simulation data poses new challenges to CAE design and analysis.The coherent in-teraction between pre-processing and post-processing is weak,and the visual interaction of large-scale data is low.Therefore,an interactive visual analysis engine for high-performance CAE simulations is proposed.Firstly,a hybrid data model that efficiently couples geometric models and computational meshes is con-structed.Secondly,a parallel visualization pipeline is developed for the coherent interaction of pre-processing and post-processing.Finally,a GPU photorealistic rendering based on lightweight primitives extracted from the external surface of volume meshes is implemented to support real-time high quality CAE design and analysis.The engine has been integrated into aeroengine CAE simulation Apps of China.The results show that it can smoothly support the interactive design and analysis of large-scale simulation appli-cations.Based on this engine,the interactive performance of one-click import and rendering of the Trent-1000 engine model,including tens of millions of unstructured grids,is more than 8 times higher than that of ANSYS software.