The detection and tracking of coherent vortical structures in a turbulent compressible boundary layer is considered. Several vortex identification methods are evaluated. It is found that for this flow, the discriminant of the characteristic polynomial of the velocity gradient tensor is the most, useful. It tends to highlight vortical structures that are located farther from the wall, and the feature detection is less sensitive to the level than the other methods evaluated. The flow fields are visualized using advanced volume rendering methods that allow large datasets to be analyzed efficiently. This methods have also been adapted to volume fill specific structures so that their evolution can be tracked in time. These approaches promise to make the analysis of large DNS datasets more efficient and quantitative.
|Original language||English (US)|
|Title of host publication||Fluids 2000 Conference and Exhibit|
|State||Published - Dec 1 2000|
|Event||Fluids 2000 Conference and Exhibit - Denver, CO, United States|
Duration: Jun 19 2000 → Jun 22 2000
|Other||Fluids 2000 Conference and Exhibit|
|Period||6/19/00 → 6/22/00|