Nonlinear Waves and Polarization in Diffusive Directed Particle Flow

Thermal Particle Injection in Nonlinear Diffusive Shock Acceleration

Donald C. Ellison, Pasquale Blasi, Stefano Gabici (a) Physics Dept., North Carolina State Univ., Raleigh, NC 27695, U.S.A. (b) High Energy Astrophysics Group, INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125, Firenze, Italy (c) Humboldt Fellow, Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany Presenter: Don Ellison (don [email protected]), usa...

Directed and diffusive contributions to urban traffic flow patterns

– As a result of an extensive field trial in Frankfurt/Main, the urban traffic pattern is represented by a distribution of local entropy variables. This letter aims at reproducing this distribution by use of two arguments —a geometrical and a hierarchical one. A characteristic scaling relation for urban traffic is derived. Introduction: urban traffic patterns. – Vehicular traffic flow has for s...

Self-sustained nonlinear waves in traffic flow.

In analogy to gas-dynamical detonation waves, which consist of a shock with an attached exothermic reaction zone, we consider herein nonlinear traveling wave solutions to the hyperbolic ("inviscid") continuum traffic equations. Generic existence criteria are examined in the context of the Lax entropy conditions. Our analysis naturally precludes traveling wave solutions for which the shocks trav...

Nonlinear standing waves in Couette-Taylor flow.

A nonlinear stability analysis by Demay and looss [J. Mec. Theor. Appl. , special issue, p. 193 (1984)] of flow between concentric rotating cylinders (the Couette-Taylor system) predicted a transition from the basic flow to a state with ribbons, which are traveling waves in the azimuthal direction but standing waves in the axial direction. We have observed the transition to ribbons in laborator...

On Nonlinear Water Waves in a Channel