基于正交试验的平板气膜冷却研究  

Study of Flat Plate Film Cooling Based on Orthogonal Experiment

作　　者：陈毓磊 梁敬宜 黄士升 王正杰 张席 Chen Yulei;Liang Jingyi;Huang Shisheng;Wang Zhengjie;Zhang Xi(School of Areo-engine,Shenyang Aerospace University,Shenyang 110136,China)

机构地区：[1]沈阳航空航天大学航空发动机学院,沈阳110136

出　　处：《发电设备》2023年第6期343-347,共5页Power Equipment

基　　金：沈阳航空航天大学大学生创新创业训练项目(X202210143048)。

摘　　要：气膜冷却是燃气轮机叶片的重要冷却形式,研究平板气膜冷却可以为透平叶片气膜冷却提供重要参考.基于正交试验,通过数值计算研究和分析气膜孔倾角、吹风比、主流湍流度对气膜冷却效率的影响.结果显示:气膜孔倾角、吹风比、主流湍流度均对气膜冷却效率存在影响,其中气膜孔倾角的影响最大,并且在小气膜孔倾角的情况下,低温气体覆盖得更加全面.Film cooling is an important cooling form of gas turbine blades, and the study of flat plate film cooling can provide an important reference for turbine blades with film cooling. Based on orthogonal experiment, researches and analyses were conducted on the effects of the air film pore inclination angle, blowing ratio and main stream turbulence on the film cooling efficiency through numerical calculation. Results show that, the air film pore inclination angle, blowing ratio and main stream turbulence all have an effect on the film cooling efficiency, while the air film pore inclination angle has the most significant effect among the above three factors. In the case of the flat plate covered by air film with smaller pore inclination angle, a better effect can be obtained with the flat plate widely covered by low temperature gas.

关 键 词：透平 叶片 气膜冷却 

分 类 号：TK474.71[动力工程及工程热物理—动力机械及工程]