Application of large-scale CFD flowfield visualization analysis system

A new visualization system for large scale computational fluid dynamics(CFD)flowfield data, called flow field visualization analysis system or FVAS for short, was presented. FVAS has several complete and practical functions such as three dimensional steady and unsteady flow field data preprocessing and feature extraction, volume rendering, glyph (streamline, isosurface, etc) rendering, texture rendering and so on. Many different data analysis methods and favorable interactions were also supported in the system. FVAS could show the inner-outer flow structure characteristics and complicated physical phenomena with eight ways of demonstration, three kinds of display modes and five types of views. FVAS also implemented animation display function for time-varying data and multi-core parallel rendering. Such cases verify that our system is simple, useful, and strongly universal. A variety of mixed rendering technologies can effectively show the internal responses in flow field data such as combustor dataset, air inlet dataset. Interactions including section and subdivision can show local features and details in multiple views, and analysis tools like chart and graph can statistically analyze the information of special grid cell. 300 test cases were completed in our system test. Compared with the traditional CFD software, our system can promote more than 70% rendering efficiency. The system fault rate is 0.6%, transaction success rate is 100%, and it can effectively accelerate the analysis and statistical process of flow field data. © 2017, Editorial Department of Journal of Aerospace Power. All right reserved.