Ultrahigh-Pressure Nitrogen Arcs Burning Inside Cylindrical Tubes

Low-pressure plasma generation inside slender tubes

Low pressure (<50 mTorr) argon discharges inside tubes of a few millimeters in diameter have been studied by means of oneand twodimensional particle-in-cell Monte Carlo collision simulations. Magnetically confined DC and microwave discharges have been sustained in a coaxial configuration. For DC discharges, the magnetic field needs to be strong enough to confine secondary electrons emitted from...

Waveguide Simulation of Non-Cylindrical Acoustic Tubes

Navier-Stokes Flow in Cylindrical Elastic Tubes

Analytical expressions correlating the volumetric flow rate to the inlet and outlet pressures are derived for the time-independent flow of Newtonian fluids in cylindrically-shaped elastic tubes using a one-dimensional Navier-Stokes flow model with two pressure-area constitutive relations. These expressions for elastic tubes are the equivalent of Poiseuille and Poiseuille-type expressions for ri...

Methanol inside aged tropical biomass burning plumes

First space-borne measurements of methanol inside aged tropical biomass burning plumes using the ACE-FTS instrument G. Dufour, C. D. Boone, C. P. Rinsland, and P. F. Bernath Laboratoire de Météorologie Dynamique/Institut Pierre Simon Laplace, Palaiseau, France Department of Chemistry, University of Waterloo, Ontario, Canada NASA Langley Research Center, Hampton, VA, USA Received: 25 January 200...

Asymmetric bifurcations of thick-walled circular cylindrical elastic tubes under axial loading and external pressure

In this paper, we consider bifurcation from a circular cylindrical deformed configuration of a thick-walled circular cylindrical tube of incompressible isotropic elastic material subject to combined axial loading and external pressure. In particular, we examine both axisymmetric and asymmetric modes of bifurcation. The analysis is based on the three-dimensional incremental equilibrium equations...