Volume 36 Issue 2
Feb.  2021
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GAO Jie, HUANG Jingwei, DU Yufeng, HUO Dongchen, FU Weiliang. Advances in rim seal aerodynamic technology for gas turbines[J]. Journal of Aerospace Power, 2021, 36(2): 284-299. doi: 10.13224/j.cnki.jasp.2021.02.007
Citation: GAO Jie, HUANG Jingwei, DU Yufeng, HUO Dongchen, FU Weiliang. Advances in rim seal aerodynamic technology for gas turbines[J]. Journal of Aerospace Power, 2021, 36(2): 284-299. doi: 10.13224/j.cnki.jasp.2021.02.007
shu

Advances in rim seal aerodynamic technology for gas turbines

doi: 10.13224/j.cnki.jasp.2021.02.007
  • 1.

    College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China

  • 2.

    Center for Post-Doctoral Studies,Chongqing University,Chongqing 401120,China

  • 3.

    Center for Post-Doctoral Research,Chongqing Jiangjin Shipbuilding Industry Company Limited,China State Shipbuilding Corporation Limited,Chongqing 402263,China

  • Received Date: 2020-06-17
  • Publish Date: 2021-02-28
    Abstract
  • 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.

     

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