The sketches of secondary flow structure in compressor cascade with endwall fences

blade fences and combined fences were presented.By blocking crosswise flow and spanwise flow respectively

the secondary flow status was controlled by the endwall fences and blade fences

resulting in reduced total loss of cascade.Both the cascade secondary flow characteristics with endwall fence and blade fence were embodied in the cascade flow with combined fences.Meanwhile

optimal combined fences was not the simple combination of optimal endwall fence and optimal blade fence.Amore detailed optimization process was required.While different fences improved cascade flow status

the endwall fence vortices

blade fence vortices and other vortices were formed and developed

making the vortex structure more complicated.