Validation of the ATEFlap Dynamic Stall Model

Two exemplary validation graphs for the ATEFlap Model from the publication by Wendler et al. [1] are shown in Fig. 122, where the general sensitivity of the dynamic stall hysteresis loop to the reduced frequency and amplitude is well reproduced.

Validation of the unsteady aerodynamics model with OSU test data (in circles) of the S809 airfoil; top: varying mean AoA; bottom: varying dimensionless frequency

Fig. 122 Validation of the unsteady aerodynamics model with OSU test data [2] (in circles) of the S809 airfoil; top: varying mean AoA; bottom: varying dimensionless frequency.