Left top to right middle plot: colormaps of the temperature, together with magnetic field lines, at t = 1.0, obtained in the different simulations, using scheme #1 and scheme #2 with the time steps dt = 10dt_tc, dt = 100dt_tc, dt = 200dt_tc and dt = 400dt_tc. The bottom left plot shows a 1D cut of the temperature at z = −0.27, and the right bottom panel shows the simulation time for each run.