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15.5: Display Distribution of Cdi

With a lift-producing wing the air pressure is higher on the wings underside than on the top side. Air which is at higher pressure tries to find a way into the area with lower pressure. Such a pressure balance succeeds e.g. at the wing tips, in addition, within areas where gaps (flap gap) are to be found. From flow around these places arise vortices, which generate drag. This drag is called induced drag Cdi. With the following button the distribution of the induced drag in span direction can be made visible.




The picture below illustrates this function in the 2D-graphic window.



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