76th Annual Meeting of the APS Division of Fluid Dynamics (November 19, 2023 — November 21, 2023)

P0051: The building blocks of spiral defect chaos

  • Chi Hin Chan, Imperial College London
  • Mohammad Zakir Hossain, Imperial College London
  • Spencer Sherwin, Imperial College London
  • Yongyun Hwang, Imperial College London
DOI: https://doi.org/10.1103/APS.DFD.2023.GFM.P0051

Spiral defect chaos (SDC) is an intrinsic state of Rayleigh-Bénard convection found within a large domain (on the right). SDC is characterised by the presence of spiral and defect-like convection patterns, exhibiting chaotic behaviour. Confined to a smaller domain, five invariant states (on the left) resembling the localised patterns of SDC, were identified. We propose that these invariant states interact with each other to form a building block description of SDC.

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