摘要
利用中国科学院工程热物理研究所和哈尔滨汽轮机厂合建的暂冲式跨音速平面叶栅风洞,进行了3套跨音速涡轮叶栅吹风实验。在此基础上,结合近年发表的跨音速涡轮叶栅叶型损失数据,详细讨论了跨音速涡轮叶栅在设计和非设计两种工作状态下叶型损失的预测方法。在具体分析设计状态下Kacker&Okapuu损失估算模型的基础上,针对发生在进出口区域的激波损失,提出了工程上更为适用的激波损失计算方法,初步建立了跨音速涡轮叶栅在不同攻角状态下的叶型损失预测系统,为跨音速涡轮的工程设计提供了较为可靠的基础性支持。
A blow-down wind tunnel of transonic turbine cascades, built by Institute of Engineering Thermophysics, Chinese Academy of Science and Harbin steam turbine factory is used for experiment of three transonic cascades, and with open data in these years, this article investigates the method of transonic cascades profile losses prediction in detail, for design or off- design condition. Based on the analysis of Kacker＆Okapuu prediction model in design condition, a more appropriate predic- tion method is suggested for shock losses in inlet and outlet zones. This article creates the profile losses prediction system of transonic turbine cascades simply, and gives the support for engineering design of transonic turbine.
出处
《汽轮机技术》
北大核心
2009年第2期81-84,共4页
Turbine Technology
关键词
叶栅
损失模型
预测
cascades
losses model
prediction
