Bifurcation in viscoresistive MHD: the Hartmann number and the reversed field pinch

S. Cappello, D.F. Escande

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Clarifications were made regarding the role of the Hartmann and Prandtl numbers in viscoresistive magnetohydrodynamics (MHD). The scaling approach revealed that the Prandtl number (P) acted only through the inertia term and when this term is neglible the Hartmann number (H) ruled the dynamics. Numerical simulation confirmed this occurence for the reverse field pinch dynamics. The results showed that when H is low enough pure single helicity state were the only stable state found in the system.
Original languageEnglish
Pages (from-to)3838 - 3841
Number of pages4
JournalPhysical Review Letters
Issue number18
Publication statusPublished - 30 Oct 2000
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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