Dispersive shock waves in systems with nonlocal dispersion of Benjamin-Ono type

Gennady El, Lu Trong Khiem Nguyen, Noel Smyth

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
13 Downloads (Pure)

Abstract

We develop a general approach to the description of dispersive shock waves (DSWs) for a class of nonlinear wave equations with a nonlocal Benjamin–Ono type dispersion term involving the Hilbert transform. Integrability of the governing equation is not a pre-requisite for the application of this method which represents a modification of the DSW fitting method previously developed for dispersive-hydrodynamic systems of Korteweg-de Vries (KdV) type (i.e. reducible to the KdV equation in the weakly nonlinear, long wave, unidirectional approximation). The developed method is applied to the Calogero–Sutherland dispersive hydrodynamics for which the classification of all solution types arising from the Riemann step problem is constructed and the key physical parameters (DSW edge speeds, lead soliton amplitude, intermediate shelf level) of all but one solution type are obtained in terms of the initial step data. The analytical results are shown to be in excellent agreement with results of direct numerical simulations.
Original languageEnglish
Pages (from-to)1392-1416
Number of pages25
JournalNonlinearity
Volume31
Issue number4
Early online date27 Feb 2018
DOIs
Publication statusPublished - 1 Apr 2018
Externally publishedYes

Fingerprint

Dive into the research topics of 'Dispersive shock waves in systems with nonlocal dispersion of Benjamin-Ono type'. Together they form a unique fingerprint.

Cite this