the recirculation flow and to encourage repetitive shearing events for example as shown by the arrows c at the recirculation channels 40 additional shearing events are provided as each of the blade tips 16a shear through the recirculation flow c see arrows produced by the recirculation channels 40 it is important to recognize that the configuraton of the recirculation channels 40 are typically selected in accordance with the application involved it is to be further recognized that the present invention provides means for degrading the antimisting fuel in a centrifugal pump while at the same time providing useful fuel flow and pressure without requiring excessive energy input or creating unacceptable fuel temperature rise the invention may be better appreciated by reference now to the following examples however it is to be understood that the invention is not limited to the details recited therein in the development of the present invention a conventional centrifugal fuel pump suitable for aircraft application substantially the same as the one shown in fig1 not including recirculation channels was tested with antimisting fuel the antimisting fuel comprised jet a fuel aircraft grade kerosene and about 0 3 by weight of imperial chemical industries ici fuel modifier fm 9 the fuel flow input to the pump was 5991 pounds per hour at cruise rpm and 15 759 pounds per hour at takeoff rpm the pump was rotated at 24 558 rpm at cruise and 26 015 rpm at takeoff the pump shaft power was 77 horsepower at cruise rpm and 113 horsepower at takeoff rpm the pump input to pump output temperature rise was 56 u00b0 f at cruise rpm and 26 u00b0 f at takeoff rpm the pressure output of the pump was 1001 psig at cruise rpm and 1121 psig at takeoff rpm the antimisting.