Thank you for your replies.
I think I have a good grasp of where all the air goes and what it does having read the patent for both the famous but poorly understood engine bleed bypass and the patent which explains all those arrows on the 5 diagrams and Peter Law's presentations in AEHS website.
Since the author of the extract knew all this stuff as well (he wrote the intake patent) and knew the lingo, when he says induced flow I'm pretty certain he was referring to the secondary flow which bypassed the engine and was induced at the ejector nozzle by the afterburner flow from the primary nozzle (and of course helped by the pressure in the intake).
Hence my question on that particular air which flowed around the engine.
I believe he is saying something beyond all the usual explanations. OTOH I may just be reading too much into one word. Any ideas?