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Experimental study of non-normal non-linear transition to turbulence in a rotating magnetic field driven flow

Grants, I.; Gerbeth, G.

Transition to turbulence of a rotating magnetic field driven liquid metal flow in a cylinder is studied experimentally by a probe-less method. A sudden, wide frequency band transition as well as intermittency are observed just at the theoretically predicted linear instability limit. A small geometrical imperfection triggers the transition in the linearly stable regime in a control parameter range where additional unstable steady solutions have been detected numerically. We discuss possibilities to predict theoretically the non-normal transition and its characteristics.

  • Physics of Fluids, USA, Vol. 15, No 10 (2003) 2803-2809

Permalink: https://www.hzdr.de/publications/Publ-5395
Publ.-Id: 5395