Pitch/Plunge Equivalence for Dynamic Stall of Unswept Finite Wings

What is it about?

Pitch-plunge equivalence for deep dynamic stall of a straight finite wing is considered employing large-eddy simulations. The pure-pitch and pure-plunge maneuvering cases are compared in detail in terms of the unsteady flow structure, surface pressure and loading. An extension to thin-airfoil theory of cambered airfoils is subsequently derived to account for the rotation-induced apparent camber present in the pitching case, which provides a correction to the observed differences in the lift and moment coefficients.

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