Improved Dynamic Stall Predictions

DDES-SSM Better predictions: drag and pitching. Negative minimum pitching moment occurs at maximum lift.

RANS, DDES-Max Deep stall not captured. Fail to capture drop in pitching moment and increase in the drag coefficient.

DDES-SSM

• Substantial cycle-to-cycle variation near stall and down stroke
• Variations similar to experimental data
• Two lift peaks: secondary and primary peaks of the same order
• Multiple dynamic stall vortices just like the experiment