Study on a direct fully reversible combined cascade;

Experimental research on the combined cascades(Part Ⅰ);

In this paper,a new design,named combined cascades,which is applied to blade design of reversible axial fan,is put forward based on the assimilating of the previous experience,the advanced technology and the up to date thinking.

Research on the effects of unsteady excitation on enhancing performance of annular cascade;

Experimental investigation on flowfields of non-axisymmetric endwall of annular cascades in multi condition;

In regard to the excitation experiments,time-Accurate numerical stimulation was carried out to investigate the upstream disturbance frequency effect under different incidence in an annular cascade.