Study of flow control strategies combined between suction slot and vortex generator on an axial compressor cascade

Abstract

To improve the compressor performances, in this research, we used numerical simulation software to analyse the effects of a combined strategies between the suction slot and vortex generator, and the influence of the aspiration flow path configuration was further investigated. The calculated results show that the 1% suction mass-flow ratio is obtained by the backward extension configuration with lower suction power, as well as total pressure loss shows a decreasing trend as the increasing amplification ratio at design condition. However, the superiority disappears at the +7 º incidence condition, the total pressure loss and suction power shows increasing trend. Moreover, the aspiration flow paths with a both sides extension configuration shows a significant advantage in suction power economy that is decreased by 0.9% and 1.5% at the -1 º and +7 º incidence condition respective.