Three-threaded coronal loop simulation: initial condition and evolution of the MHD avalanche. Left panel: three-dimensional rendering of the initial magnetic field configuration in the proximity of each coronal loop (for the second model, with three strands). The purple field lines were subjected to a faster twisting driver than the green ones. Right panel: horizontal cut of the Ohmic heating per unit time and per unit volume at the middle of the box at different times. From the top down, these times are: t = 11 200 s (onset of first kink instability), t = 11 400 s, t = 11 800 s (disruption of the second and third strands), and t = 11 900 s. The green filaments indicate areas where the current density exceedes the threshold value for dissipation.