Nonlinear dynamo in a short Taylor-Couette setup

Abstract

It is numerically demonstrated by means of a magnetohydrodynamics code that a short Taylor-Couette setup with a body force can sustain dynamo action. The magnetic threshold is comparable to what is usually obtained in spherical geometries. The linear dynamo is characterized by a rotating equatorial dipole. The nonlinear regime is characterized by fluctuating kinetic and magnetic energies and a tilted dipole whose axial component exhibits aperiodic reversals during the time evolution. These numerical evidences of dynamo action in a short Taylor-Couette setup may be useful for developing an experimental device.

References in corpus (3)

• Generation of magnetic field by dynamo action in a turbulent flow of liquid sodium
• Electromagnetic induction in non-uniform domains
• High Magnetic Shear Gain in a Liquid Sodium Stable Couette Flow Experiment; A Prelude to an alpha-Omega Dynamo

Cited by in corpus (3)

• Dynamo Action in a Quasi-Keplerian Taylor-Couette Flow
• Enhanced dynamo growth in nonhomogeneous conducting fluids
• High-speed shear driven dynamos. Part 2. Numerical analysis