The Physics of Fluids

  title={The Physics of Fluids},
  author={Kenneth and Arrow and Leonid Hur-wicz and Hirofumi Uzawa},
A localized arc-filament plasma actuator, which in this application is recessed in a small cavity near the nozzle lip, causes intense local heating. This heating is thought to be the root mechanism of its influence on the flow, but how this principally entropic thermal source couples with the vortical jet shear layer turbulence downstream is unclear. We investigate this using direct numerical simulations, the results of which have illuminated several features of the actuation. 

Hydrodynamic Limit for an Arc Discharge at Atmospheric Pressure

In this paper we study a partially ionized plasma that corresponds to an arc discharge at atmospheric pressure. We derive an inviscid hydrodynamic/diffusion limit, characterized by two temperatures,

Emergent kink stability of a magnetized plasma jet injected into a transverse background magnetic field

We report experimental results on the injection of a magnetized plasma jet into a transverse background magnetic field in the HelCat linear plasma device at the University of New Mexico [M. Gilmore

Spatial Stability Analysis of a High Speed Liquid Jet

A spatial linear stability analysis of a liquid jet with a locally parallel base flow is performed. It is found that a pocket of absolute instability is present in the region closest to the jet exit,

Shock Dynamics in Particle-Laden Thin Films

We present theory and experiments for thin film particle-laden flow on an incline. At higher particle concentration and inclination angle, a new phenomenon is observed in which a large particle-rich

Theory for shock dynamics in particle-laden thin films.

A lubrication theory is derived for this system which is qualitatively compared to preliminary experimental data to explain the emergence of a particle-rich ridge observed experimentally in a thin film particle-laden flow on an incline.

Shock wave formation in the collapse of a vapor nanobubble.

In this Letter, the dynamics of a collapsing vapor bubble is addressed by means of a diffuse-interface formulation that cleanly captures all the critical features of the process, such as phase change, transition to supercritical conditions, thermal conduction, compressibility effects, and shock wave formation and propagation.

Cooling flow regime of a plasma thermal quench

A large class of Laboratory, Space, and Astrophysical plasmas is nearly collisionless. When a localized energy or particle sink, for example, in the form of a radiative cooling spot or a black hole,

Behaviour of turbulent transport in the vicinity of a magnetic island

The influence of a static magnetic island on the behaviour of the electrostatic turbulence in a tokamak is investigated numerically employing global nonlinear gyrokinetic particle-in-cell

An Investigation of Non-Equilibrium Effects in Thermal Argon Plasmas

The parameters and transport properties of a wall stabilized argon arc (40-200 A) at atmospheric pressure with diameters of 5 and 8 mm are studied by spectroscopy and interferometry. The plasma is

Ja n 20 02 Note on a Micropolar Gas-Kinetic Theory

The micropolar fluid mechanics and its transport coefficients are derived from the linearized Boltzmann equation of rotating particles. In the dilute limit, as expected, transport coefficients