YANG Qing-hai, HUANG Hong-yan, HAN Wan-jin. Topology and Vortex Structures of a Curving Turbine Cascade With Tip Clearance (Ⅱ)-Topological Flow Pattern and Vortex Structure in the Transverse Section of a Blade Cascade[J]. Applied Mathematics and Mechanics, 2002, 23(8): 851-854.
 Citation: YANG Qing-hai, HUANG Hong-yan, HAN Wan-jin. Topology and Vortex Structures of a Curving Turbine Cascade With Tip Clearance (Ⅱ)-Topological Flow Pattern and Vortex Structure in the Transverse Section of a Blade Cascade[J]. Applied Mathematics and Mechanics, 2002, 23(8): 851-854.

# Topology and Vortex Structures of a Curving Turbine Cascade With Tip Clearance (Ⅱ)-Topological Flow Pattern and Vortex Structure in the Transverse Section of a Blade Cascade

• 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 transverse section,and by appling topology theory,the topological structures and vortex structure in the transverse section of a blade cascade 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] 杨庆海,黄洪雁,韩万今. 有叶顶间隙的涡轮弯叶栅拓扑与旋涡结构(Ⅰ)——实验模型、端壁与叶片表面拓扑结构[J]. 应用数学和力学,2002,23(8):843-850. [2] Hunt J C R, Abell C J, Peterla J A, et al. Kinematical studies of the flow around free of surface mounted obstacles: applying topology to flow visualization[J]. Fluid Mech,1978,86:179-200. [3] 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.

### Catalog

###### 通讯作者: 陈斌, bchen63@163.com
• 1.

沈阳化工大学材料科学与工程学院 沈阳 110142