George, here are two figures from K&W – one could be described as a “Wedge” figure 12-6 and the other one a “streamline” wedge figure 12-12.

Always  dangerous for me to try to interpret what K&W are really saying, but from what I get from these two figures, it would appear that the “streamline” wedge permits you to use a smaller inlet (Ai = 0.30 Ab) for the same performance (same losses) that you get with a larger opening Ai = 0.44 Ab for the pure Wedge.  But, that is just my take on it.

The slight bump (where the 64 deg angle is annotated) of the Streamline wedge may be to increase the boundary layer velocity to delay separation of the boundary layer  in that far corner where duct meets core. 

Ed

Ed Anderson

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