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On the Vortex Dynamics in the Wake of High-Speed Low-Damping Galloping Cylinders

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Fluid-Structure-Sound Interactions and Control (FSSIC 2017)

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

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Abstract

In this work, we focus on the vortex evolutions in the wake behind three non-axisymmetric rigid cylinders under high-speed, low-damping galloping in a wind tunnel. Laser displace sensor is used to measure the displacement amplitude and two branches of amplitude curves are observed—rising and falling range of galloping range. Particle Image Velocimetry is then used to investigate coherent vortex structures in the wake. It has been found that a D-section cylinder has a galloping response at the lowest free stream velocity, which also has the smallest formation length and recirculation bubble length when at static condition. The wake widths show a similar growth rate, which is independent of the galloping amplitudes.

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References

  1. Williamson CHK, Govardhan R (2004) Vortex-induced vibrations. Annu Rev Fluid Mech 36

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  2. Wang Q, Song K, Xu S (2015) Experimental study of a spring-mounted wide-D-section cylinder in a cross flow. In: 3rd symposium on fluid-structure-sound interactions and control

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  3. Mannini C, Marra AM, Bartoli G (2014) VIV galloping instability of rectangular cylinders: review and new experiments. J Wind Eng Ind Aerodyn 132

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Acknowledgements

The authors thank the support from UK Royal Academy of Engineering (NRCP/1415/130) and China NSFC (11472158).

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Authors and Affiliations

  1. Department of Engineering, Durham University, DH1 3LE, Durham, UK

    L. Gan & H. O. Claydon

  2. AML, School of Aerospace Engineering, Tsinghua University, Beijing, 100084, China

    Q. Y. Wang & S. J. Xu

Authors
  1. L. Gan
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  2. H. O. Claydon
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  3. Q. Y. Wang
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  4. S. J. Xu
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Corresponding author

Correspondence to L. Gan .

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Editors and Affiliations

  1. Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, China

    Yu Zhou

  2. Nihon University, Tokyo, Japan

    Motoaki Kimura

  3. Nihon University, Tokyo, Japan

    Guoyi Peng

  4. Curtin University, Perth, Western Autralia, Australia

    A.D. Lucey

  5. The University of Hong Kong, Hong Kong, China

    Lixi Huang

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© 2019 Springer Nature Singapore Pte Ltd.

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Gan, L., Claydon, H.O., Wang, Q.Y., Xu, S.J. (2019). On the Vortex Dynamics in the Wake of High-Speed Low-Damping Galloping Cylinders. In: Zhou, Y., Kimura, M., Peng, G., Lucey, A., Huang, L. (eds) Fluid-Structure-Sound Interactions and Control. FSSIC 2017. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-7542-1_40

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  • DOI: https://doi.org/10.1007/978-981-10-7542-1_40

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-7541-4

  • Online ISBN: 978-981-10-7542-1

  • eBook Packages: EngineeringEngineering (R0)

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