Transition to turbulence in Taylor-Couette ferrofluidic flow

Sebastien Altmeyer, Younghae Do, Ying-Cheng Lai

Research output: Contribution to journalArticle

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Abstract

It is known that in classical fluids turbulence typically occurs at high Reynolds numbers. But can turbulence occur at low Reynolds numbers? Here we investigate the transition to turbulence in the classic Taylor-Couette system in which the rotating fluids are manufactured ferrofluids with magnetized nanoparticles embedded in liquid carriers. We find that, in the presence of a magnetic field transverse to the symmetry axis of the system, turbulence can occur at Reynolds numbers that are at least one order of magnitude smaller than those in conventional fluids. This is established by extensive computational ferrohydrodynamics through a detailed investigation of transitions in the flow structure, and characterization of behaviors of physical quantities such as the energy, the wave number, and the angular momentum through the bifurcations. A finding is that, as the magnetic field is increased, onset of turbulence can be determined accurately and reliably. Our results imply that experimental investigation of turbulence may be feasible by using ferrofluids. Our study of transition to and evolution of turbulence in the Taylor-Couette ferrofluidic flow system provides insights into the challenging problem of turbulence control.
Original languageEnglish
Article number10781
JournalScientific Reports
Volume5
Early online date12 Jun 2015
DOIs
Publication statusPublished - 12 Jun 2015

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Couette flow
turbulence
ferrofluids
rotating fluids
fluids
high Reynolds number
low Reynolds number
magnetic fields
Reynolds number
angular momentum
nanoparticles
symmetry
liquids

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Transition to turbulence in Taylor-Couette ferrofluidic flow. / Altmeyer, Sebastien; Do, Younghae; Lai, Ying-Cheng.

In: Scientific Reports, Vol. 5, 10781, 12.06.2015.

Research output: Contribution to journalArticle

Altmeyer, Sebastien ; Do, Younghae ; Lai, Ying-Cheng. / Transition to turbulence in Taylor-Couette ferrofluidic flow. In: Scientific Reports. 2015 ; Vol. 5.
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