Dynamics of torsional oscillations in the solar convective zone

In this presentation I will discuss the dynamics of torsional oscillations arising in a magnetohydrodynamical simulation of solar convection producing solar-like polarity reversals of its large-scale axisymmetric magnetic component. I will show that the driving of these oscillations arises not only through periodic variations of the Lorentz force associated with the cycling large-scale magnetic component, but also through magnetically-mediated changes in the other forces controlling the azimuthal dynamics, namely Reynolds stresses, Coriolis force, and Maxwell stresses associated with the small-scale turbulent magnetic component. To this end, various characterizations of the components will be displayed : angular momentum fluxes, force densities and power densities. I will also compare and contrast the properties of these oscillations with their solar counterparts, as measured by helioseismology.