Dissipation in Hamiltonian systems: decaying cnoidal waves
Derks, Gianne and van Groesen, E. (1996) Dissipation in Hamiltonian systems: decaying cnoidal waves SIAM Journal on Mathematical Analysis, 27 . pp. 1424-1447.
The uniformly damped Korteweg--de Vries (KdV) equation with periodic boundary conditions can be viewed as a Hamiltonian system with dissipation added. The KdV equation is the Hamiltonian part and it has a two-dimensional family of relative equilibria. These relative equilibria are space-periodic soliton-like waves, known as cnoidal waves. Solutions of the dissipative system, starting near a cnoidal wave, are approximated with a long curve on the family of cnoidal waves. This approximation curve consists of a quasi-static succession of cnoidal waves. The approximation process is sharp in the sense that as a solution tends to zero as t to infinity, the difference between the solution and the approximation tends to zero in a norm that sharply picks out their difference in shape. More explicitly, the difference in shape between a solution and a quasi-static cnoidal-wave approximation is of the order of the damping rate times the norm of the cnoidal-wave at each instant.
|Additional Information:||Published in SIAM Journal on Mathematical Analysis, 27, 1424-1447. © 1996 Society for Industrial and Applied Mathematics.|
|Uncontrolled Keywords:||asymptotic behavior, cnoidal waves, perturbed KdV equation|
|Divisions:||Faculty of Engineering and Physical Sciences > Mathematics|
|Deposited By:||Mr Adam Field|
|Deposited On:||27 May 2010 15:40|
|Last Modified:||28 Sep 2012 10:50|
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