Drag force in bimodal cubic-quintic nonlinear Schrödinger equation

Phys Rev E Stat Nonlin Soft Matter Phys. 2014 Sep;90(3):033204. doi: 10.1103/PhysRevE.90.033204. Epub 2014 Sep 22.

Abstract

We consider a system of two cubic-quintic nonlinear Schrödinger equations in two dimensions, coupled by repulsive cubic terms. We analyze situations in which a probe lump of one of the modes is surrounded by a fluid of the other one and analyze their interaction. We find a realization of D'Alembert's paradox for small velocities and nontrivial drag forces for larger ones. We present numerical analysis including the search of static and traveling form-preserving solutions along with simulations of the dynamical evolution in some representative examples.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Nonlinear Dynamics*
  • Physical Phenomena*