Predicting the Stress and Deformation of Pump-turbine’s Guide Vane at Small Opening

Zhiyu Tao; Mingkun Fang; Ran Tao

doi:10.2991/978-94-6463-650-5_6

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Predicting the Stress and Deformation of Pump-turbine’s Guide Vane at Small Opening

Authors

Zhiyu Tao¹, Mingkun Fang¹, Ran Tao¹^{, *}

¹College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, China

^*Corresponding author. Email: randytao@cau.edu.cn

Corresponding Author

Ran Tao

Available Online 31 January 2025.

DOI: 10.2991/978-94-6463-650-5_6 How to use a DOI?
Keywords: pump-turbine; guide vane opening; stress; deformation
Abstract: Guide vane is a key component of reversible pump-turbine for flow regulation and guidance. In the start-up process of pump mode, guide vane will be closed for a long time until runner rotates in full speed and then continually opens maximum. When the opening angle is small, guide vane suffers large and pulsating hydraulic force due to complex transient flow regime. The stress and deformation of guide vane are important when considering the hydraulic stability of pump-turbine. In this study, computational fluid dynamics analysis is conducted under 10% maximum guide vane opening angle based on simplified domain. The jet-vortex flow structure can be observed in guide vane and stay vane and induces pulsating torque on guide vane blade. The stress and deformation of guide vane are studied by fluid-solid interaction method at torque peak, middle and valley conditions. The structural response characteristics are understood at small opening angle condition and can be referred for full operation conditions. This study provides a fast prediction way of the structural response of guide vane which is suitable for engineering cases and generates the typical force variation law for referring.
Copyright: © 2025 The Author(s)
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title: Proceedings of the 2024 7th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2024)
Series: Advances in Engineering Research
Publication Date: 31 January 2025
ISBN: 978-94-6463-650-5
ISSN: 2352-5401
DOI: 10.2991/978-94-6463-650-5_6 How to use a DOI?
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

ris enw bib

TY  - CONF
AU  - Zhiyu Tao
AU  - Mingkun Fang
AU  - Ran Tao
PY  - 2025
DA  - 2025/01/31
TI  - Predicting the Stress and Deformation of Pump-turbine’s Guide Vane at Small Opening
BT  - Proceedings of the 2024 7th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2024)
PB  - Atlantis Press
SP  - 47
EP  - 55
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-650-5_6
DO  - 10.2991/978-94-6463-650-5_6
ID  - Tao2025
ER  -

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