涡轮叶冠间隙流场PIV测量

喻雷; 常海萍; 马虎跃

涡轮叶冠间隙流场PIV测量

南京航空航天大学能源与动力学院,南京 210016

计量
- 文章访问数: 1672
- HTML浏览量: 128
- PDF量: 507
- 被引次数: 0
出版历程
- 收稿日期: 2011-09-20
- 刊出日期: 2012-08-28

PIV measurement of flow field for tip clearance flow in turbine shroud

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

摘要

摘要: 为了研究带有冷却气流的涡轮叶冠间隙流场流动特性,采用粒子图像测速仪(PIV)技术得到了叶冠间隙流场中各个典型截面的瞬时流场显示,并对叶冠间隙流场特性进行了研究.研究发现:由于叶冠腔内有两股叶尖冷却气流的注入,叶尖泄漏流流过叶冠间隙时会与两股冷却流相互掺混,从而使腔内气流的流动状态变得非常复杂,因此在叶冠突肩之后以及叶冠腔内流体汇合处会有大小方向各异的涡流产生.同时,两股冷却气流均对泄漏流有一定的阻挡作用,前孔冷却流的阻挡作用更为明显.随前孔与后孔岀流比增加,前孔流及后孔流对泄露流的阻挡作用增强.
- 航空发动机 /
- 涡轮叶片 /
- 叶冠 /
- 间隙流动 /
- 粒子图像测速仪 (PIV) 测量
Abstract: In order to study flow characteristics of tip clearance flow in turbine shroud,a cooling experimental system was designed,and the instantaneous flow field of each typical section was received by particle image velocimetry(PIV).Then the flow field characteristics of tip clearance flow were studied.The result shows:two cooling flows of the turbine shroud cavity mixing with tip leakage flow makes the flow state in shroud cavity very complex.Therefore,vortex flows with different functions and sizes are generated at different positions in shroud cavity.Meanwhile,both the two cooling airflows have blocking effect on the leakage flow,and the effect from the former hole is more obvious.
- aircraft engine /
- turbine blade /
- shroud /
- tip clearance flow /
- PIV(particle image velocimetry) measurement

HTML

参考文献(15)

[1]	毛佳妮,曹紫胤.抑制叶顶间隙泄漏的叶轮机械叶片的流场模拟[J].热能动力工程,2009,24(2):154-157. MAO Jiani,CAO Ziyin.Flow field simulation of turbomachine blades with their tip clearance leakage being suppressed[J].Journal of Engineering for Thermal Energy and Power,2009,24(2):154-157.(in Chinese)
[2]	杨策,马朝臣,王延生,等.透平机械叶尖间隙流场研究的进展[J].力学进展,2001,31(1):70-83. YANG Ce,MA Chaochen,WANG Yansheng,et al. A review of studies on turbomachinery tip gap leakage flow[J].Advances in Machanics,2001,31(1):70-83.(in Chinese)
[3]	漆文凯,陈伟.某型航空发动机高压涡轮叶尖间隙数值分析[J].南京航空航天大学学报,2003,35(1):63-67. QI Wenkai,CHEN Wei.Tip clearance numerical analysis of an aero-engine HPT[J].Journal of Nanjing University of Aeronautics & Astronautics,2003,35(1):63-67.(in Chinese)
[4]	Wallis A M,Denton J D,Demargne A A J.The control of shroud leakage flows to reduce aerodynamic losses in a low aspect ratio shrouded axial flow turbine .ASME Paper 2000-GT-475,2000.
[5]	Rosic B,Denton J D,Pullan G.The importance of shroud leakage modeling in multistage turbine flow calculation[J].Journal of Turbomachinery,2006,128(4):699-707.
[6]	Thompson D W,Kingp I,Rabe D C.Experimental investigation of stepped tip gap effects on the performance of a transonic axial-flow compressor rotor[J].ASME Journal of Turbomachinery,1998,120(3):477-486.
[7]	Goto A.Three-dimensional flow and mixing in an axial flow compressor with different rotor tip clearance .ASME Paper 1991-GT-89,1991.
[8]	Mathioudakis K,Doukelis A,Papailiou K.The effect of tip clearance gap size and end wall rotation on the performance of a high-speed annular compressor cascade .ASME Paper 1998-GT-38,1998.
[9]	Bonhomment C C,Gerolymos G A.Analysis of tip effects in a high subsonic annular compressor cascade .ASME Paper 1998-GT-195,1998.
[10]	李伟,乔渭阳,许开富,等.雷诺数对涡轮叶尖流场影响的数值研究[J].推进技术,2007,28(4):388-393. LI Wei,QIAO Weiyang,XU Kaifu,et al.Numerical simulation for effects of Reynolds numbers on tip leakage flows in turbine[J].Journal of Propulsion Technology,2007,28(4):388-393.(in Chinese)
[11]	邵锦文,张振家,袁宁,等.航空发动机涡轮叶尖间隙损失的统计设计[J].推进技术,2003,24(2):122-124. SHAO Jinwen,ZHANG Zhenjia,YUAN Ning,et al.Statistical design for turbine blades tip clearance loss analysis[J].Journal of Propulsion Technology,2003,24(2):122-124.(in Chinese)
[12]	潘炳华,王治国,杨军.高压涡轮转子叶片端面的流动与换热特性研究[J].燃气涡轮试验与研究,2009,22(2):30-33. PAN Binghua,WANG Zhiguo,YANG Jun.Studies of flow and heat transfer characteristic on the HPT blade tip[J].Gas Turbine Experiment and Research,2009,22(2):30-33.(in Chinese)
[13]	李伟,乔渭阳,许开富.涡轮叶尖间隙泄漏流动主动控制数值模拟[J].航空动力学报,2008,23(7):1260-1264. LI Wei,QIAO Weiyang,XU Kaifu.Numerical simulation of active control on tip leakage flow in axial turbine[J].Journal of Aerospace Power,2008,23(7):1260-1264.(in Chinese)
[14]	牛冬生,陈伟,漆文凯.涡轮叶尖间隙计算实现方法与结果分析[J].燃气涡轮试验与研究,2004,17(4):31-34. NIU Dongsheng,CHEN Wei,QI Wenkai.Calculation program for turbine tip clearance and result analysis[J].Gas Turbine Experiment and Research,2004,17(4):31-34.(in Chinese)
[15]	李军.PIV技术在涡轮静叶测量中的应用[J].激光与红外,2008,38(2):105-108. LI Jun.Application of PIV measurement technology on turbomachmery[J].Taser & Infrared,2008,38(2):105-108.