December 5, 2025Journal of Fluid MechanicsOpen Access

Axial oscillations of a sphere in a rotating cylinder

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Numerical analysis shows that oscillations affect mean flow and cause resonance in a rotating cylinder, suggesting nonlinear effects.

Oscillations of a sphere in a rotating cylinder produce significant changes in mean flow, resulting in nonlinear dynamics.
Key findings reveal interactions between harmonic oscillations and governing equations under specific oscillation frequencies.
The approach involves numerical exploration of forced response flows with a focus on hyperbolic systems and shear layers.
These findings highlight how oscillation amplitude changes can lead to complex fluid behavior in rotational systems.

Roberto Verzicco (2025) studied this question.

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