Experimental investigation of scaling and temperature effects on flowing and heat transfer characteristics in labyrinth seals

被引：0
|
作者：
Zhang B. [1 ]
Ji H.-H. [1 ]
Du F.-Q. [1 ]
Lu H.-Y. [2 ]
Deng M.-C. [2 ]
机构：
[1] Nanjing University of Aeronautics and Astronautics, Jiangsu Province Key Laboratory of Aerospace Power System, Nanjing
[2] Shenyang Aero engine Research Institute, Shenyang
来源：
| 1600年 / Journal of Propulsion Technology卷 / 37期
关键词：
Changing of temperature; Flow efficiency; Heat transfer characteristics; Labyrinth seal; Scaling model;
D O I：
10.13675/j.cnki.tjjs.2016.02.014
中图分类号：
学科分类号：
摘要：
Based on the real labyrinth seals, the rectangular and trapezium scaling models were designed by exemplifying the original ones by times. The flow and heat transfer characteristics of the scaling and original seals were experimentally investigated and compared, in the same time, the effect of temperature on flow efficiency was investigated. The results showed, the flowing efficiency and Nusselt number of the original and scaling models all increase with Renaults number, and have the similar values, the largest difference of flowing and heat transfer efficiency between the scaling and original models are 5.3% and 9.7%, respectively. It can be concluded that the scaling models keep the same flow and heat transfer characteristics formed in small gaps of the original seals. It was also found that flowing efficiency decreased with gas temperature rising. © 2016, Journal of Propulsion Technology. All right reserved.
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页码：304 / 310
页数：6
相关论文
共 6 条
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