AN INTUITIVE PARAMETRIC MODEL FOR MHD TURBULENCE AND SIMPLE APPLICATIONS TO ASTROPHYSICS

Jean Baptiste Durrive – IRAP

An analytical model for 3D incompressible turbulence was recently introduced in the hydrodynamics community which, with only a few parameters, shares many properties of experimental and numerical turbulence. In our work, we extend this approach to compressible and magnetized fluids, in view of modeling astrophysical environments. Our model constitutes a complementary tool to numerical simulations, as it enables us to generate very quickly fairly realistic velocity fields and magnetic fields, the statistics of which are controllable with intuitive parameters. In this talk, I will present our model in easily understood physical terms. I will also present examples of applications: magnetic fields for studies of the interstellar medium and velocity fields in view of analyzing Athena data.