Loading...
Nonlinear Stability of Viscous Roll Waves
Johnson, Mathew A. Zumbrun, Kevin Noble, Pascal
Johnson, Mathew A.
Zumbrun, Kevin
Noble, Pascal
Citations
Altmetric:
Abstract
Extending results of Oh and Zumbrun and of Johnson and Zumbrun for parabolic conservation laws, we show that spectral stability implies nonlinear stability for spatially periodic viscous roll wave solutions of the one-dimensional St. Venant equations for shallow water flow down an inclined ramp. The main new issues to be overcome are incomplete parabolicity and the nonconservative form of the equations, which lead to undifferentiated quadratic source terms that cannot be handled using the estimates of the conservative case. The first is resolved by treating the equations in the more favorable Lagrangian coordinates, for which one can obtain large-amplitude nonlinear damping estimates similar to those carried out by Mascia and Zumbrun in the related shock wave case, assuming only symmetrizability of the hyperbolic part. The second is resolved by the observation that, similarly as in the relaxation and detonation cases, sources occurring in nonconservative components experience decay that is greater than expected, comparable to that experienced by a differentiated source.
Description
This is the published version, also available here: http://dx.doi.org/10.1137/100785454.
Date
2011-03-01
Journal Title
Journal ISSN
Volume Title
Publisher
Society for Industrial and Applied Mathematics
Collections
Research Projects
Organizational Units
Journal Issue
Keywords
roll waves, St. Venant equations, modulational stability
Citation
Johnson, Mathew A., Zumbrun, Kevin., Noble, Pascal. "Nonlinear Stability of Viscous Roll Waves."
SIAM J. Math. Anal., 43(2), 577–611. (35 pages). http://dx.doi.org/10.1137/100785454.