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Fig. 17. Drag coefficients as a function of distance traveled for a wing started from rest and translated seven chord lengths at a 45° angle of attack. Dotted lines represent data collected during an experiment by Dickinson and Götz (1993), and solid lines represent the results of our two-dimensional simulation. Oscillations in drag are smaller than those measured in lift and correspond to the alternate shedding of the leading and trailing edge vortices.





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