Turbine blade boundary layer separation suppression via synthetic jet: An experimental and numerical study

被引：27
|
作者：
Bernardini, C. [1 ]
Carnevale, M. [1 ]
Manna, M. [2 ]
Martelli, F. [1 ]
Simoni, D. [3 ]
Zunino, P.
机构：
[1] Univ Florence, Florence, Italy
[2] Univ Naples Federico II, Naples, Italy
[3] Univ Genoa, Genoa, Italy
来源：
JOURNAL OF THERMAL SCIENCE | 2012年 / 21卷 / 05期
关键词：
Synthetic Jet; Separated Flow; Active Flow Control; Unsteady Flow; Ultra High Lift LPT; ACTIVE FLOW-CONTROL; TRANSITION;
D O I：
10.1007/s11630-012-0561-2
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present paper focuses on the analysis of a synthetic jet device (with a zero net massflow rate) on a separated boundary layer. Separation has been obtained on a flat plate installed within a converging-diverging test section specifically designed to attain a local velocity distribution typical of a high-lift LPT blade. Both experimental and numerical investigations have been carried out. Unsteady RANS results have been compared with experiments in terms of time-averaged velocity and turbulence intensity distributions. Two different Reynolds number cases have been investigated, namely Re = 200, 000 and Re = 70, 000, which characterize low-pressure turbine operating conditions during take-off/landing and cruise. A range of synthetic jet aerodynamic parameters (Strouhal number and blowing ratio) has been tested in order to analyze the features of control - separated boundary layer interaction for the aforementioned Reynolds numbers.
引用
收藏
页码：404 / 412
页数：9
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