流体机械

2008, No.437(11) 23-27

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掠高对涡轮静叶栅气动性能的影响
Influence of Swept Height on Turbine Static Cascade Aerodynamics

齐晗兵;陈勇;张德实;王增藩;李春红;
QI Han-bing1,CHEN Yong2,ZHANG De-shi2,WANG Zeng-fan3,LI Chun-hong2(1.Daqing Petroleum Institute,Daqing 163318,china;2.Daqing Production Engineering Research Institute,Daqing 163453,china;3.Daqing Oil Recovery Plant No.2,Daqing 163414,china)

摘要(Abstract):

采用数值模拟技术对轴向前掠,轴向后掠和原叶片进行计算,研究掠高变化对涡轮静叶栅气动性能的影响。结果表明:叶片前掠时,掠高增大使反C型压力分布加强,而反C型压力分布使端壁损失增大,但前掠减小了流道主流区的总压损失。叶片后掠时,掠高增大使C型压力分布被加强,而C型压力分布使端壁损失减小,但后掠增大了流道主流区的总压损失。
The axial fore-sweep,axial aft-sweep and prototype blades are computed by numerical simulation technology,and the influence of sweep height to turbine static cascades aerodynamics was studied.The numerical simulation results indicates: the sweep height of fore-sweep blades strengthen the C-type pressure distribution,the C-type increase the endwall corner loss,but fore-sweep decrease the total pressure loss of main flow at mid-span.The sweep height of aft-sweep blades also strengthen the negative C-type pressure distribution,the negative C-type decrease the endwall secondary flow loss,but aft-sweep increase the total pressure loss of the main flow at mid-span.

关键词(KeyWords): 汽轮机;掠高;仿真;压力分布
steam turbine;sweep height;simulation;pressure distribution

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作者(Author): 齐晗兵;陈勇;张德实;王增藩;李春红;
QI Han-bing1,CHEN Yong2,ZHANG De-shi2,WANG Zeng-fan3,LI Chun-hong2(1.Daqing Petroleum Institute,Daqing 163318,china;2.Daqing Production Engineering Research Institute,Daqing 163453,china;3.Daqing Oil Recovery Plant No.2,Daqing 163414,china)

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