Wave heating and nonlinear dynamics of coronal loops

We present the first results of 2.5D nonlinear magnetohydrodynamic wave heating simulations of solar coronal loops with inclusion of the modeling of the coupling to the transition region and chromosphere. Magnetic flux tubes with fixed lengths are considered but the coronal extent of the loops as situated in between the two transition regions can vary dynamically. The numerical simulations were carried out with the Versatile Advection Code. The loops are excited with linearly polarized Alfven waves at the chromospheric base. The main finding is that resonant absorption is not efficient since most of the Poynting flux that enters the loop will be used to support all the nonlinearly generated magnetoacoustic motions and the corresponding compression of coronal plasma.