Parametric Investigations of Unsteady Holed Pulsed Suction to Control Flow Separations in a Highly Loaded Compressor Cascade

被引：0
|
作者：
Zhang H.-X. [1 ]
Chen S.-W. [1 ]
Gong Y. [1 ]
Wang S.-T. [1 ]
Wang Z.-Q. [1 ]
机构：
[1] Engine Aerodynamics Research Centre, Harbin Institute of Technology, Harbin
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 03期
关键词：
Excitation parameter; Flow separation; Highly loaded compressor; Time-averaged suction flow rate; Unsteady pulsed suction;
D O I：
10.13675/j.cnki.tjjs.180136
中图分类号：
学科分类号：
摘要：
In order to explore the application prospects of unsteady pulsed suction (UPS) to control flow separations in a highly loaded compressor cascade and to understand the adaptability and flexibility of UPS under different excitation parameters, different excitation parameters of UPS such as excitation frequency, excitation location, pitch angle, and skew angle were first discussed and analyzed in detail. And then, based on the optimum excitation parameters, the result of UPS was compared with that of steady contant suction (SCS). The results show that excitation parameters play important roles in controlling flow separations. The aerodynamic performances of compressors can be significantly enhanced when all the excitation parameters are in their optimum ranges; if not, the control effect of flow separation will be weakened, which even results in an increase of the total pressure loss. When all the excitation parameters are their optimum values, total pressure loss is reduced by 19% only with the time-averaged suction flow rate [ms]=0.4%. Based on the optimum excitation parameters, UPS has more advantage in controlling flow separations and improving aerodynamic performances compared to SCS with the same time-averaged suction flow rate. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：552 / 560
页数：8
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