スプリッタ翼を採用したヘリカルインデューサのキャビテーションCFD

抄録

For general use turbopump inducers, high suction performance is required in a wide flow rate range including the cutoff point. Reduction of the blade inlet angle for suppression of inlet backflow at low flow rates, while the inlet throat area should be kept large for high suction performance at high flow rates. In this study, to suffice these contradictory requirements, a splitter blade was adopted and its effect was investigated by CFD considering cavitation. As a result, the inlet back flow was successively reduced at low flow rates without significant suction performance deterioration.