Abstract
It was found that higher nozzle efficiency and loading ratio are obtained by mounting the injection port at the entrance of the suction nozzle. In order to improve the efficiency of the nozzle, the entrance shape of the suction nozzle is examined by changing the radius of the edge of the nozzle, as to reduce the large separation region created at the entrance of the nozzle. Furthermore, the sub-holes are mounted at the top of the injection nozzle and wider fluidization of the particles bed could be preformed. As a result, most provable nozzle shape is decided for the given conditions.
