Simulation analysis of the aerodynamic and heat transfer characteristics using sweeping jet and film composite cooling on the leading-edge of actual turbine blades

被引：2

作者：

Kong, Xiangcan ^{[1
]}

Zhang, Yanfeng ^{[2
,3
]}

Liu, Xiaogang ^{[4
]}

Ma, Hongjie ^{[1
]}

Zhu, Junqiang ^{[2
,3
]}

机构：

[1] Harbin Univ Sci & Technol, Rongcheng Coll, Weihai 264300, Peoples R China

[2] Chinese Acad Sci, Inst Engn Thermophys, Key Lab Light duty Gas turbine, Beijing 100190, Peoples R China

[3] Natl Key Lab Sci & Technol Adv Light duty Gas turb, Beijing 100190, Peoples R China

[4] Harbin Univ Sci & Technol, Sch Mech & Power Engn, Harbin 150001, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2025年 / 240卷

基金：

中国国家自然科学基金;

关键词：

Fluidic oscillator; Sweeping jet and film composite cooling; Leading-edge of turbine blades; POD; IMPINGEMENT; PERFORMANCE;

D O I：

10.1016/j.ijheatmasstransfer.2025.126678

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

As a novel cooling structure, sweeping jet and film composite cooling (SJF) are analyzed in this paper for their application in the flow field characteristics on the leading-edge of a high-pressure turbine vane designed by von Karman Institute for Fluid Dynamics (VKI-LS89). Firstly, three film hole arrangement schemes were compared and a more reasonable scheme (which is called Scheme 3) was selected. Then, the transient flow field characteristics of scheme 3 were analyzed. Thirdly, the proper orthogonal decomposition method (POD) was used to analyze the aerodynamic characteristics of its Blade-to-Blade (B2B) surface. Finally, the cooling effectiveness of the novel cooling structure was compared with that of the cylindrical impingement hole and film composite cooling structure (NJF). Due to the periodic pulsation of the sweeping jet and the different inclination angles of the film holes in each column, the flow characteristics of the fluidic oscillator and the impingement chamber were symmetrically or anti-symmetrically distributed. The film cooling effectiveness of SJF is 21.43 % -40.74 % higher than that of NJF under the same condition. However, the inclination angle of the first row of film holes (PS1) near the pressure surface is too large, resulting in a shorter effective coverage distance of the film here. In the future, the influence of geometric factors of the film holes on the aerodynamic and heat transfer characteristics in the novel cooling structure will be completed.

引用

页数：16

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