As a frontier subject in the fluid machinery field

the fluid-structure interaction problem of turbomachinery is a key factor inducing the fault of turbomachinery.Investigations on mechanism of fluid-structure interaction have great theoretical significance and engineering value.The research progress of fluidstructure coupling problem in turbomachinery at home and abroad was introduced.Firstly

the basic theory of fluid-structure interaction and governing equations were presented

and then the research achievement of fluid-structure interaction of turbomachinery in theory

experiment and numeric method were summarized and the advantages and disadvantages of different methods were also compared.Finally

according to the existing problems and shortages in this field

the future of the studies on mechanism

the development of multi-field coupling technique and numerical research of fluid-structure interaction in turbomachinery were discussed.Optimization objectives of strong coupling module in FSI analysis software were also presented.