title: Drag force in bimodal cubic-quintic nonlinear Schrödinger equation.
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.
authors.affiliation: Área de Óptica, Departamento de Física Aplicada, Universidade de Vigo, As Lagoas s/n, Ourense ES-32004, Spain.
authors.forename: David
authors.initials: D
authors.lastname: Feijoo
authors.affiliation: Área de Óptica, Departamento de Física Aplicada, Universidade de Vigo, As Lagoas s/n, Ourense ES-32004, Spain.
authors.forename: Ismael
authors.initials: I
authors.lastname: Ordóñez
authors.affiliation: Área de Óptica, Departamento de Física Aplicada, Universidade de Vigo, As Lagoas s/n, Ourense ES-32004, Spain.
authors.forename: Angel
authors.initials: A
authors.lastname: Paredes
authors.affiliation: Área de Óptica, Departamento de Física Aplicada, Universidade de Vigo, As Lagoas s/n, Ourense ES-32004, Spain.
authors.forename: Humberto
authors.initials: H
authors.lastname: Michinel
mesh_terms: D017711:Nonlinear Dynamics; D055585:Physical Phenomena