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인듀서와 임펠러 축방향 간극이 터보펌프 성능에 미치는 영향
최창호(Chang-Ho Choi),김대진(Dae-Jiin Kim),홍순삼(Soon-Sam Hong),김진한(Jinhan Kim) 한국유체기계학회 2007 유체기계 연구개발 발표회 논문집 Vol.- No.-
An inducer is employed in a modem rocket feed system because it allows a turbopump system to operate at a high speed with low inlet pressures so as to minimize the weight and the size of the system. Cavitation performance can be improved by installing an inducer to the pump, enabling to increase the operational speed of the pump. The main purpose of an inducer is to increase the static pressure prior to an impeller to enable the impeller to operate satisfactorily under cavitation environments. In the present study, the effects of axial distance between the inducer and the impeller on the performance of the pump were studied using both experimental and computational methods. Two inducers with different axial length were used for the experiments and the pump performances were measured. The experimental results show that the suction performance decreases as the axial gap between the inducer and impeller is increased.