Non-axisymmetric Magnetorotational Instabilities in Cylindrical Taylor-Couette Flow
Fluid Dynamics
2010-01-28 v2
Abstract
We study the stability of cylindrical Taylor-Couette flow in the presence of azimuthal magnetic fields, and show that one obtains non-axisymmetric magnetorotational instabilities, having azimuthal wavenumber m=1. For Omega_o/Omega_i only slightly greater than the Rayleigh value (r_i/r_o)^2, the critical Reynolds and Hartmann numbers are Re_c ~ 10^3 and Ha_c ~ 10^2, independent of the magnetic Prandtl number Pm. These values are sufficiently small that it should be possible to obtain these instabilities in the PROMISE experimental facility.
Keywords
Cite
@article{arxiv.0910.0206,
title = {Non-axisymmetric Magnetorotational Instabilities in Cylindrical Taylor-Couette Flow},
author = {Rainer Hollerbach and Vijaya Teeluck and Gunther Rudiger},
journal= {arXiv preprint arXiv:0910.0206},
year = {2010}
}
Comments
final version as accepted by Phys Rev Lett