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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

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Abstract

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.

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References

  1. YANG Qing-hai, HUANG Hong-yan, HAN Wan-jin. Topological flow pattern and vortex structure of a turbin curving blade cascade with tip clearance (I)—experiment model and topological structure on both endwalls and blade surfaces[J]Appled Mathematics and Mechanics (English Ed), 2002,23(8):948–957.

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Authors and Affiliations

  1. Academy of Energy Science and Engineering, Harbin Institute of Technology, P O Box 458, 150001, Harbin, P R China

    Yang Qing-hai Doctor, Huang Hong-yan & Han Wan-jin

Authors
  1. Yang Qing-hai Doctor
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  2. Huang Hong-yan
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  3. Han Wan-jin
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Additional information

Communicated by DAI Shi-qiang

Foundation items: 973 Project of China; the Doctoral Foundation of Education Ministry of China (EDAF24403003)

Biography: YANG Qing-hai (1969−)

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Qing-hai, Y., Hong-yan, H. & Wan-jin, H. 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. Appl Math Mech 23, 958–962 (2002). https://doi.org/10.1007/BF02437801

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  • DOI: https://doi.org/10.1007/BF02437801

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