摘要
基于利用小槽出口射流控制叶片吸力面分离气流的思想,为获得更好的叶栅流场特性,在两段式平行直线转折槽结构的基础上,提出一种改进的开槽结构,用CFD方法对2种结构开槽前后的叶栅流场进行数值模拟分析对比。为进一步研究改进结构的槽道出气角对叶栅性能的影响,另设计了多种出气角度。计算结果表明,改进的槽道能够更好地改善叶栅性能,获得更高的气流转折角和静压升,以及更低的总压损失。槽道出气角对叶栅性能也有较大的影响。
Based on the thought that the jet flow from slot outlet can control separation of boundary layer on the suc- tion surface, an improved slot configuration is designed to obtain better flow field characteristics of cascade. The CFD measures are used to analyze the effect of blade slot treatment on performance of cascade. Different slot outlet angles are studied. The results indicate that the improved slot configuration can help obtain better flow field charac- teristics, higher turning angle and static pressure rise, and lower total pressure loss. Slot outlet angle obviously af- fects the flow field characteristics of cascade.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2012年第5期1-4,19,共5页
Journal of Air Force Engineering University(Natural Science Edition)
基金
国家自然科学基金资助项目(50906100)
关键词
叶栅
叶片开槽处理
射流
附面层
流场性能
cascade
blade slot treatment
jet flow
boundary layer
flow field characteristics
