YANG Qing-hai, HUANG Hong-yan, HAN Wan-jin. Topology and Vortex Structures of a Curving Turbine Cascade With Tip Clearance (Ⅰ)-Experimental Model and Topological Flow Patterns on Both Endwalls and Blade Surfaces[J]. Applied Mathematics and Mechanics, 2002, 23(8): 843-850.
 Citation: YANG Qing-hai, HUANG Hong-yan, HAN Wan-jin. Topology and Vortex Structures of a Curving Turbine Cascade With Tip Clearance (Ⅰ)-Experimental Model and Topological Flow Patterns on Both Endwalls and Blade Surfaces[J]. Applied Mathematics and Mechanics, 2002, 23(8): 843-850.

# Topology and Vortex Structures of a Curving Turbine Cascade With Tip Clearance (Ⅰ)-Experimental Model and Topological Flow Patterns on Both Endwalls and Blade Surfaces

• Rev Recd Date: 2002-03-26
• Publish Date: 2002-08-15
• By means of ink trace visualization of the flows in conventional straight,positively curved and negatively curved cascades with tip clearance,and measurement of the aerodynamic parameters in the transverse section,and by appling topology theory,the structures on both endwalls and blade surfaces were analyzed.Compared with conventional straight cascade,blade positive curving eliminates the separation line of the upper passage vortex and leads the secondary vortex to change from close separation to open separation,while blade negative curving effects merely the positions of singular points and the intensities and scales of vortex.
•  [1] 权生林. 叶片弯曲对间隙流动影响的实验研究[D]. 硕士论文. 哈尔滨:哈尔滨工业大学,1997. [2] WANG Zhong-qi, HAN Wang-jin. The influence of blade negative curving on the endwall and blade surface flows[R]. ASME Paper 95-GT-441,1995. [3] HAN Wan-jin, WANG Zhong-qi. Effect of blade curving on streamwise vortex system in cascade outlet field[A]. In: CHEN Nan-xing, JIANG Hong-de Eds. Proc 1st Int Symp Exper Compal Aerothermodyn Internal Flows[C]. Beijing: Word Publishing Corporation,1990,321-325. [4] Yamamoto A. Endwall flow/loss mechanisms in s linear turbine cascade with blade tip clearance[J]. Trans ASME J Turbomachinery,1989,111:264-275. [5] Lighthill M J. Introduction: boundary layer theory[A]. In: Rosenhead Ed. Laminer Boundary Layers[C]. Oxford: Oxford Univ Press,1963,46-113. [6] KANG Shun. Investigation on the three-dimensional flow within a compressor cascade with and without tip clearance[D]. Ph D Thesis. Brussel: Vrije Universiteit Brussel,1993. [7] 夏雪湔,邓学蓥. 工程分离流动力学[M]. 北京:北京航空航天大学出版社,1991.

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