Exploring the origin of Turbulent Taylor rolls

Abstract

Since Taylor's seminal paper, the existence of large-scale quasi-axisymmetric structures has been a matter of interest when studying Taylor-Couette flow. In this manuscript, we probe their formation in the highly turbulent regime by conducting a series of numerical simulations at a fixed Reynolds number $R{e}_s=3.6\times 10^4$ while varying the Coriolis parameter to analyze the flow characteristics as the structures arise and dissipate. We show how the Coriolis force induces a one-way coupling between the radial and azimuthal velocity fields inside the boundary layer, but in the bulk there is a two-way coupling that causes competing effects. We discuss how this complicates the analogy of narrow-gap Taylor-Couette to other convective flows. We then compare these statistics to a similar shear flow without no-slip boundary layers, showing how this double coupling causes very different effects. We finish by reflecting on the possible origins of turbulent Taylor rolls.

References in corpus (16)

• Turbulent superstructures in Rayleigh-Bénard convection
• Turbulence and secondary motions in square duct flow
• Transition to the ultimate regime in two-dimensional Rayleigh-Bénard convection
• Multiple states in highly turbulent Taylor-Couette flow
• Turbulent thermal superstructures in Rayleigh-Bénard convection
• Exploring the phase diagram of fully turbulent Taylor-Couette flow
• Ultimate Turbulent Taylor-Couette Flow
• Boundary layer dynamics at the transition between the classical and the ultimate regime of Taylor-Couette flow
• Coherence of temperature and velocity superstructures in turbulent Rayleigh-Bénard flow
• The near-wall region of highly turbulent Taylor-Couette flow
• Effects of the computational domain size on direct numerical simulations of Taylor-Couette turbulence with stationary outer cylinder
• Dynamics and evolution of Turbulent Taylor rolls
• Double maxima of angular momentum transport in $\eta =0.91$ TC turbulence
• Exact relations between Rayleigh-Bénard and rotating plane Couette flow in 2D
• Marginally stable and turbulent boundary layers in low-curvature Taylor-Couette flow
• Large-scale structures in high Reynolds number rotating Waleffe flow

Cited by in corpus (1)

• Routes to turbulence in Taylor-Couette flow