Variational principle for non-linear wave propagation in dissipative systems
Pattern Formation and Solitons
2016-02-24 v1 Mathematical Physics
math.MP
Abstract
The dynamics of many natural systems is dominated by non-linear waves propagating through the medium. We show that the dynamics of non-linear wave fronts with positive surface tension can be formulated as a gradient system. The variational potential is simply given by a linear combination of the occupied volume and surface area of the wave front, and changes monotonically in time. Finally, we demonstrate that vortex filaments can be written as a gradient system only if their binormal velocity component vanishes, which occurs in chemical system with equal diffusion of reactants.
Cite
@article{arxiv.1508.06423,
title = {Variational principle for non-linear wave propagation in dissipative systems},
author = {Hans Dierckx and Henri Verschelde},
journal= {arXiv preprint arXiv:1508.06423},
year = {2016}
}