@Article{JMS-49-205, author = {Bona , Jerry L. and Chen , Min}, title = {Singular Solutions of a Boussinesq System for Water Waves}, journal = {Journal of Mathematical Study}, year = {2016}, volume = {49}, number = {3}, pages = {205--220}, abstract = {

Studied here is the Boussinesq system $$η_t+u_x+(ηu)_x+au_{xxx}-bη_{xxt}=0,$$ $$u_t+η_x+\frac{1}{2}(u²)_x+cη_{xxx}-du_{xxt}=0,$$of partial differential equations. This system has been used in theory and practice as a model for small-amplitude, long-crested water waves. The issue addressed is whether or not the initial-value problem for this system of equations is globally well posed.
The investigation proceeds by way of numerical simulations using a computer code based on a a semi-implicit, pseudo-spectral code. It turns out that larger amplitudes or velocities do seem to lead to singularity formation in finite time, indicating that the problem is not globally well posed.

}, issn = {2617-8702}, doi = {https://doi.org/10.4208/jms.v49n3.16.01}, url = {http://global-sci.org/intro/article_detail/jms/999.html} }