Effect of the Model-Sidewall Connection for a Dynamic Stall Airfoil Experiment

What is it about?

This paper shows an experimental investigation of sidewall interference for pitching airfoils. It follows a similar investigation from this journal for static airfoils, published in 2013. Two wall-connection options are investigated: drive shafts with a gap between the wall and the airfoil end, and a rotating side-plate embedded in the wind tunnel sidewall. For dynamic and static test cases it has been shown that the gap between an airfoil and the wind-tunnel wall can have a significant effect on the forces during stall at the midline.

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