Magnetic field generation (Dynamo) in planets, stars, and galaxies remains one of the important unsolved puzzles in physics. Dynamo has been observed in some of the recent experiments. Magnetic Reynolds number and Prandtl number are the key parameters for dynamo. There are now careful numerical simulations that are investigating the critical Reynolds and Prandtl numbers required for the simulation. I will review some of the experimental and numerical results in
the seminar.
On theoretical front, there are many models which have been proposed. However in this talk, I will focus on the energy transfer from the kinetic energy to magnetic energy that aid the dynamo. We have discovered a six-mode model based on large-scale velocity and magnetic field that shows dynamo transition. These results will be described.
*Note different location.