Integrated Influence Mechanism of Typical Parameters on Sealing Effectiveness of Rim Seal

被引：0
|
作者：
Dong W.-L. [1 ]
Wang S.-F. [1 ]
Xia Z.-L. [1 ]
机构：
[1] Ministry of Industry and Information Technology, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 06期
关键词：
Fetter effect; Ingestion; Inner ring; Rim seal;
D O I：
10.13675/j.cnki.tjjs.180442
中图分类号：
学科分类号：
摘要：
In order to have a good understanding of the integrated influence mechanism of the typical parameters on sealing effectiveness of rim seal, the internal relationship between the ingestion form and the vortex structure in sealing gap was studied and revealed by numerical method. On this basis, an inner ring rim seal was designed. The results show that not only increasing rotation speed but also increasing mainstream mass flow will lead to the reduction of the sealing efficiency, but the role of the two is to fetter each other. Compared with conventional orifice model, the inner ring rim seal utilize fetter effect to widen the work condition range of the high sealing efficiency by restricting the recirculation vortex in the sealing gap. Thus the sealing effectiveness was improved. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：1293 / 1299
页数：6
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