Investigation of Vortex Breakdown over a Pitching Delta Wing applying the DLR TAU-Code with Full, Automatic Grid Adaptation

This paper covers a description of the complete process chain used to investigate the vortex breakdown over a pitching delta wing. Special attention is given to the dynamic adaptation strategies used to capture the main flow structures as well as the analysis of vortex breakdown and the formation of primary and secondary vortices. The demonstrated approach with hybrid grids and a standard URANS flow solver shows extraordinary good results for this type of application.