In order to clarify the development status and trend of rim seal technology based on the research of relevant literatures

the development of the research about gas turbine rim seal aerodynamic technology was reviewed in five aspects: the prediction model of gas intrusion for rim seals

the unstable flow mechanism for rim seals

gas intrusion characteristics and flow mechanisms for turbine rim seals

the mutual interaction between the rim seal flow and the turbine mainstream

and turbine rim seal design and aerodynamic performance improvement. The common research methods and research results of rim seal flow were briefly summarized. The research result show that in the future

it is necessary to further improve the prediction model of gas intrusion theory of multiple seal structures under the influence of multi-parameter coupling

strengthen the turbine high parameter experiment and high-precision numerical calculation method. Besides

more in-depth and detailed research should be carried out on rotation-induced invasion under variable operating conditions

interference between rim seals

and unsteady interaction evolution mechanism between seal outflow and mainstream

and on this basis

it’s imperative to explore the design optimization technology of high-performance rim seal structure. In addition

strengthening the research on the influence of the purge flow under the air-heat environment on the cooling characteristics of the turbine

and the development of turbine low-dimensional aerodynamic design technology considering the purge flow effect is also an important direction for the development of rim seal technology.