Turbulence in electrically conducting fluids driven by rotating and travelling magnetic fields

Jörg Stiller, Kristina Koal, Hugh M. Blackburn

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Abstract

The turbulent flow driven by rotating and travelling magnetic fields in a closed cylinder is investigated by means of direct numerical simulations (DNS) and large eddy simulations (LES). Our model is based on the low-induction, low-frequency approximation and employs a spectral-element/Fourier method for discretisation. The spectral vanishing viscosity (SVV) technique was adopted for the LES. The study provides first insights into the developed turbulent flow. In the RMF case, Taylor-Görtler vortices remain the dominant turbulence mechanism, as already in the transitional regime. In contrast to previous predictions we found no evidence that the vortices are confined closer to the wall for higher forcing. In the TMF more than 50 percent of the kinetic energy is bound to the turbulent fluctuations, which renders this field an interesting candidate for mixing applications.

Original languageEnglish
Title of host publicationProgress in Turbulence III - Proceedings of the iTi Conference in Turbulence 2008
PublisherSpringer
Pages215-218
Number of pages4
Volume131
ISBN (Print)9783642022241
DOIs
Publication statusPublished - 1 Jan 2010
Event3rd Conference on Turbulence, iTi 2008 - Bertinoro, Italy
Duration: 1 Jan 20081 Jan 2008

Conference

Conference3rd Conference on Turbulence, iTi 2008
CountryItaly
CityBertinoro
Period1/01/081/01/08

Cite this

Stiller, J., Koal, K., & Blackburn, H. M. (2010). Turbulence in electrically conducting fluids driven by rotating and travelling magnetic fields. In Progress in Turbulence III - Proceedings of the iTi Conference in Turbulence 2008 (Vol. 131, pp. 215-218). Springer. https://doi.org/10.1007/978-3-642-02225-8_52