each of said plurality of magnets being of sufficient strength to create enough flux in its respective pole piece concentrator that said concentrator carries {HEAD ~ sufficient flux} to said ferrous cylindrical wall to create surplus magnetic flux in said wall in excess of the magnetic flux carrying capacity of {TAIL ~ said wall} so that said surplus flux will extend within the interior of said core, perpendicular to said axis of said core and the direction of fluid flow in said interior of said core, 
each of said plurality of magnets being of sufficient strength to create enough flux in its respective pole piece concentrator that said concentrator carries { HEAD ~ sufficient flux } to said ferrous cylindrical wall to create surplus magnetic flux in said wall in excess of the magnetic flux carrying capacity of { TAIL ~ said wall } so that said surplus flux will extend within the interior of said core , perpendicular to said axis of said core and the direction of fluid flow in said interior of said core ,
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