New type of magnetorotational instability in cylindrical taylor-couette flow.

@article{Hollerbach2005NewTO,
  title={New type of magnetorotational instability in cylindrical taylor-couette flow.},
  author={Rainer Hollerbach and Guenther Ruediger},
  journal={Physical review letters},
  year={2005},
  volume={95 12},
  pages={124501}
}
We study the stability of cylindrical Taylor-Couette flow in the presence of combined axial and azimuthal magnetic fields, and show that adding an azimuthal field profoundly alters the previous results for purely axial fields. For small magnetic Prandtl numbers Pm, the critical Reynolds number Re(c) for the onset of the magnetorotational instability becomes independent of Pm, whereas for purely axial fields it scales as Pm-1. For typical liquid metals, Re(c) is then reduced by several orders of… CONTINUE READING

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