Periodic and quasiperiodic vortex shedding in the wake of a rotating sphere

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• Benoit Pier, LMFA, Ecole Central, France
• Thursday 22 January 2015, 11:30-12:30
• Open Plan Area, BP Institute, Madingley Rise CB3 0EZ.

If you have a question about this talk, please contact Catherine Pearson.

Without rotation, the wake of a sphere is governed by a single control parameter (the Reynolds number) and the dynamic régimes that are selected at low and moderate values of RE are well known. Here we consider rotation of the sphere about an axis aligned with the outer flow. This second control parameter (Omega) does not break the axisymmetry of the setting but allows for a much richer bifurcation scenario. By investigating the relevant base flows, studying their linear stability properties and computing the corresponding fully developed régimes we attempt to systematically map out a large region of the parameter space and to relate the observed behaviour to its non-rotating counterpart.

This talk is part of the Seminars for the Institute for Energy and Environmental Flows (formerly BP Institute) series.

This talk is included in these lists:

• All Talks (aka the CURE list)
• Cambridge Energy Seminars
• Department of Earth Sciences seminars
• NanoDTC Energy Materials Talks
• Open Plan Area, BP Institute, Madingley Rise CB3 0EZ
• Seminars for the Institute for Energy and Environmental Flows (formerly BP Institute)
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