冲角对导向涡轮叶栅气动性能影响研究  

Research on Effects of Incidence to Turbine Guide Cascade Aerodynamic Performance

作　　者：冯子明[1] 李青燕 邢宗涛 魏玉阳[4] 

机构地区：[1]东北石油大学,黑龙江大庆163318 [2]长庆油田公司第一采气厂,陕西长庆718500 [3]大庆钻探工程公司钻井一公司,黑龙江大庆163411 [4]大庆油田有限责任公司第四采油厂,黑龙江大庆163312

出　　处：《节能技术》2011年第6期486-489,共4页Energy Conservation Technology

摘　　要：汽轮机组运行时,冲角的变化可能在叶栅流道内造成流动损失。因此有必要研究来流冲角的变化对涡轮叶栅内流动的影响。通过导向叶片进口气流与轴向偏转-10°,0°和10°建立三个工况。用ANSYS CFX流体动力学软件分别对三个工况进行数值仿真,结果发现仿真叶片的后加载特性具有很好的冲角适应性,在压力面和吸力面的大部分范围内冲角变化没有改变表面的静压分布,但是负冲角能够小幅度减弱压力损失,而正冲角增加了压力损失。The change of incidence angle may bring about flow loss, when steam turbine sets are working, so it is necessary to study the effects of inflow incidence on cascade aerodynamic performance. This artide adopted ANSYS CFX software to simulate cascade characteristics with -10°,0°and 10°incidence angle. The results of this simulation showed that aft - loaded characteristic of blade adapted to incidence angle well, the incidence angle didn＇t change surface pressure distribution within a large percent of pressure surface and suction surface, but the negative incidence reduced pressure loss, the positive incidence increased pressure loss.

关 键 词：导向叶栅 冲角 二次流 数值研究 

分 类 号：TK14[动力工程及工程热物理—热能工程]