へリカルインデューサの特性と流動状態

抄録

This paper presents the results of experiments on flat-plate helical inducers. In order to offer sufficient data for designing helical inducers, various inducers were fabricated and tested. The number of blades, the blade length and the blade angle were varied systematically, and the overall performance and exit flow condition of each inducer were measured. The results obtained can be summarized as follows. (1) The number of blades and blade length have optimum values. (2) The ratio of axial velocity at outlet to that at inlet is about 1.3, and turning angle and pressure loss depend only on attack angle, in spite of the differences in inducers and flow rate. Consequently, head rise can be easily estimated using these results.