Calculation of Two-Dimensional Plasma Flows in Channels

1980 ◽  
pp. 105-197 ◽  
Author(s):  
K. V. Brushlinskii ◽  
A. I. Morozov
Keyword(s):  
Two Dimensional ◽  
Plasma Flows

Basis of the quasi-steady plasma accelerator theory in the presence of a longitudinal magnetic field

2008 ◽  
Vol 74 (2) ◽  
pp. 261-286 ◽  
Author(s):  
ANDREY N. KOZLOV
Keyword(s):  
Magnetic Field ◽  
Longitudinal Magnetic Field ◽  
Plasma Accelerator ◽  
Two Dimensional ◽  
Magnetohydrodynamic Equations ◽  
Plasma Flows ◽  
Azimuthal Magnetic Field ◽  
Transonic Flows ◽  
Accelerator Channel ◽  
Numerical Approaches

AbstractThe analytic and numerical approaches to the investigation of the two-dimensional steady-state plasma flows are analyzed and compared with reference to a plasma accelerator channel in the presence of a longitudinal magnetic field. The present study continues a cycle of research into the plasma flows in the coaxial channels with the traditional azimuthal magnetic field. The additional longitudinal field opens new possibilities for controlling the dynamic processes and achieving the transonic flows. The research is based on the magnetohydrodynamic equations.

scholarly journals The spectrum of MHD flows about X points

1998 ◽  
Vol 60 (2) ◽  
pp. 421-446
Author(s):  
R. J. NIJBOER ◽  
J. P. GOEDBLOED ◽  
A. E. LIFSCHITZ
Keyword(s):  
Mach Number ◽  
Physical Space ◽  
The Other ◽  
Two Dimensional ◽  
Fourier Space ◽  
Dimensional Problem ◽  
Essential Spectra ◽  
Plasma Flows ◽  
One Dimensional ◽  
Magnetohydrodynamic Flows

A recently proposed method to calculate the spectrum of linear, incompressible, unbounded plasma flows is applied to magnetohydrodynamic flows about X points. The method transforms the two-dimensional spectral problem in physical space into a one-dimensional problem in Fourier space. The latter problem is far easier to solve. Application of this method to X-point plasma flows results in two kinds of essential spectra. One kind corresponds to stable perturbations and the other one to perturbations that become overstable whenever the square of the poloidal Alfvén Mach number becomes larger than 1. Apart from these two spectra, no other spectral values were found.

A two‐dimensional nonequilibrium model of cascaded arc plasma flows

1991 ◽  
Vol 3 (9) ◽  
pp. 2548-2557 ◽  
Author(s):  
J. J. Beulens ◽  
D. Milojevic ◽  
D. C. Schram ◽  
P. M. Vallinga
Keyword(s):  
Two Dimensional ◽  
Arc Plasma ◽  
Plasma Flows ◽  
Nonequilibrium Model

scholarly journals Two-dimensional PIC simulations of ion beam instabilities in Supernova-driven plasma flows

2008 ◽  
Vol 50 (6) ◽  
pp. 065020 ◽  
Author(s):  
M E Dieckmann ◽  
A Meli ◽  
P K Shukla ◽  
L O C Drury ◽  
A Mastichiadis
Keyword(s):  
Ion Beam ◽  
Two Dimensional ◽  
Plasma Flows ◽  
Beam Instabilities

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

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