AIAA Paper 2008-396. Presented at the 46th AIAA Aerospace Sciences Meeting and Exhibit, January 7, 2008, pages 1-24.
NOTE: At the time of publication, the author Russell M. Cummings was on sabbatical leave from Cal Poly.
The numerical simulation of the flow around a 65° delta wing configuration with rounded leading edges is presented. For the numerical simulation the Cobalt Code uses a cell-centered unstructured hybrid mesh approach. Several numerical results are presented for the steady RANS equations as well as for DES and DDES hybrid approaches. The simulations are done as part of the NATO RTO/AVT 113 working group focusing on experimental and numerical research on delta wing configurations with rounded leading edges. Within this paper the focus is related to the dual primary vortex flow topology, especially the sensitivity of the flow to angle of attack and Reynolds number effects. Reasonable results are obtained with both steady RANS and SA-DDES simulations. The results are compared and verified by experimental data, including surface pressure and pressure sensitive paint results. The impact of transition is assessed, and recommendations for improving future simulations are made.
This article is in the public domain. Published by American Institute of Aeronautics and Astronautics.