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Transition to Periodic Behaviour of Flow Past a Circular Cylinder under the Action of Fluidic Actuation in the Transitional Regime

Author

Listed:
  • Wasim Sarwar

    (Department of Physics, Aerospace Engineering Division, Universitat Politècnica de Catalunya, 08034 Barcelona, Spain)

  • Fernando Mellibovsky

    (Department of Physics, Aerospace Engineering Division, Universitat Politècnica de Catalunya, 08034 Barcelona, Spain)

  • Md. Mahbub Alam

    (Institute for Turbulence Control, Harbin Institute of Technology, Shenzhen 518055, China)

  • Farhan Zafar

    (Institute for Turbulence Control, Harbin Institute of Technology, Shenzhen 518055, China)

Abstract

This study focuses on the numerical investigation of the underlying mechanism of transition from chaotic to periodic dynamics of circular cylinder wake under the action of time-dependent fluidic actuation at the Reynolds number = 2000. The forcing is realized by blowing and suction from the slits located at ± 90 ∘ on the top and bottom surfaces of the cylinder. The inverse period-doubling cascade is the underlying physical mechanism underpinning the wake transition from mild chaos to perfectly periodic dynamics in the spanwise-independent, time-dependent forcing at twice the natural vortex-shedding frequency.

Suggested Citation

  • Wasim Sarwar & Fernando Mellibovsky & Md. Mahbub Alam & Farhan Zafar, 2021. "Transition to Periodic Behaviour of Flow Past a Circular Cylinder under the Action of Fluidic Actuation in the Transitional Regime," Energies, MDPI, vol. 14(16), pages 1-10, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:16:p:5069-:d:616475
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