高压涡轮动叶前缘新型几何特征对流场结构影响研究  

The Investigation of Flow Field Structure with New Geometry of Leading Edge on HP Turbine Rotor Blade

作　　者：王凯[1] 赵智源 孙燕平[1] 罗磊[2] 

机构地区：[1]华北电力科学研究院有限责任公司,北京100045 [2]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《节能技术》2014年第1期3-7,共5页Energy Conservation Technology

基　　金：国家科技支撑计划课题(2011BAA07B04)

摘　　要：本文提出一种前缘前伸内凹且根部叶片略厚的新型动叶片设计方法,旨在通过这种新型叶片控制前缘马蹄涡的生成和发展,通过根部叶片较厚到中间区域叶片厚度略低的三维设计和积叠方法,实现动叶片的弯叶片效果。论文以某高压涡轮叶片为研究对象,从能量损失系数、型面压力分布、旋涡沿流向变化对比分析了新型叶片与原型叶片对流场结构的影响。研究表明叶型前缘新的几何特征使马蹄涡得到控制,流场内流动得到改善。In order to control the generation and development of horseshoe vortex, a new method for desig- ning rotor blade has been put forth, in which the leading edge has geometry of protrusive, a small round- ed as well as reversal curvature and thick blade root. The neo - blade has the effect of bowed blade cas- cade designed by the 3D system and stacking method. In this paper, an HP turbine rotor blade is investi- gated by comparing new blade with original blade from the coefficient of energy loss, the pressure distri- bution along profile and the transformation of vortex along flow passage. The result shows that horseshoe vortex is under control with new leading edge and the flow condition in flow field improves dramatiealiv.

关 键 词：高压涡轮 马蹄涡 弯叶片效果 新叶型 二次流 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]