Well-posedness of one-dimensional Korteweg models

Date

2006-05-02

Authors

Benzoni-Gavage, Sylvie
Danchin, Raphael
Descombes, Stephane

Journal Title

Journal ISSN

Volume Title

Publisher

Texas State University-San Marcos, Department of Mathematics

Abstract

We investigate the initial-value problem for one-dimensional compressible fluids endowed with internal capillarity. We focus on the isothermal inviscid case with variable capillarity. The resulting equations for the density and the velocity, consisting of the mass conservation law and the momentum conservation with Korteweg stress, are a system of third order nonlinear dispersive partial differential equations. Additionally, this system is Hamiltonian and admits travelling solutions, representing propagating phase boundaries with internal structure. By change of unknown, it roughly reduces to a quasilinear Schrodinger equation. This new formulation enables us to prove local well-posedness for smooth perturbations of travelling profiles and almost-global existence for small enough perturbations. A blow-up criterion is also derived.

Description

Keywords

Capillarity, Korteweg stress, Local well-posedness, Schrodinger equation

Citation

Benzoni-Gavage, S., Danchin, R., & Descombes, S. (2006). Well-posedness of one-dimensional Korteweg models. <i>Electronic Journal of Differential Equations, 2006</i>(59), pp. 1-35.

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Attribution 4.0 International

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