Deceleration of a strong shock wave by a transverse magnetic field at substantial magnetic reynolds numbers

1977 ◽  
Vol 18 (2) ◽  
pp. 160-164
Author(s):  
D. A. But ◽  
B. A. Sluchak
Keyword(s):  
Magnetic Field ◽  
Shock Wave ◽  
Transverse Magnetic Field ◽  
Strong Shock ◽  
Reynolds Numbers ◽  
Transverse Magnetic ◽  
Strong Shock Wave

Magneto-fluid-mechanic pipe flow in a transverse magnetic field. Part 1. Isothermal flow

1971 ◽  
Vol 47 (4) ◽  
pp. 737-764 ◽  
Author(s):  
R. A. Gardner ◽  
P. S. Lykoudis
Keyword(s):  
Magnetic Field ◽  
Transverse Magnetic Field ◽  
Reynolds Numbers ◽  
Transverse Magnetic ◽  
Isothermal Flow ◽  
Turbulent Shear ◽  
Turbulent Shear Flow ◽  
Axial Pressure ◽  
Mean Velocity ◽  
Velocity Fluctuations

An experimental investigation was conducted in a circular pipe to examine the influence of a transverse magnetic field on the structure of turbulent shear flow of a conducting fluid (mercury). In the present paper, part 1, mean velocity profiles, turbulence intensity profiles, velocity fluctuation spectra, axial pressure drop profiles, and skin friction data are presented which quantitatively exhibit the Hartmann effect and damping of the velocity fluctuations over a broad range of Reynolds numbers and magnetic fields. The results of heat transfer experiments will be reported by the authors in the following paper, part 2.

scholarly journals An Exact Analytical Solution of the Strong Shock Wave Problem in Nonideal Magnetogasdynamics

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
S. D. Ram ◽  
R. Singh ◽  
L. P. Singh
Keyword(s):  
Magnetic Field ◽  
Shock Wave ◽  
Analytical Solution ◽  
Shock Front ◽  
Total Energy ◽  
Wave Motion ◽  
Exact Analytical Solution ◽  
Strong Shock ◽  
Strong Shock Wave ◽  
Wave Problem

We construct the solutions to the strong shock wave problem with generalized geometries in nonideal magnetogasdynamics. Here, it is assumed that the density ahead of the shock front varies according to a power of distance from the source of the disturbance. Also, an analytical expression for the total energy carried by the wave motion in nonideal medium under the influence of magnetic field is derived.

Control of Vortex Shedding From a Bluff Body Using Imposed Magnetic Field

2006 ◽  
Vol 129 (5) ◽  
pp. 517-523 ◽  
Author(s):  
Sintu Singha ◽  
K. P. Sinhamahapatra ◽  
S. K. Mukherjea
Keyword(s):  
Magnetic Field ◽  
Reynolds Number ◽  
Steady Flow ◽  
Transverse Magnetic Field ◽  
Vortex Shedding ◽  
Bluff Body ◽  
Reynolds Numbers ◽  
Transverse Magnetic ◽  
Staggered Grid ◽  
The Magnetic Field

The two-dimensional incompressible laminar viscous flow of a conducting fluid past a square cylinder placed centrally in a channel subjected to an imposed transverse magnetic field has been simulated to study the effect of a magnetic field on vortex shedding from a bluff body at different Reynolds numbers varying from 50 to 250. The present staggered grid finite difference simulation shows that for a steady flow the separated zone behind the cylinder is reduced as the magnetic field strength is increased. For flows in the periodic vortex shedding and unsteady wake regime an imposed transverse magnetic field is found to have a considerable effect on the flow characteristics with marginal increase in Strouhal number and a marked drop in the unsteady lift amplitude indicating a reduction in the strength of the shed vortices. It has further been observed, that it is possible to completely eliminate the periodic vortex shedding at the higher Reynolds numbers and to establish a steady flow if a sufficiently strong magnetic field is imposed. The necessary strength of the magnetic field, however, depends on the flow Reynolds number and increases with the increase in Reynolds number. This paper describes the algorithm in detail and presents important results that show the effect of the magnetic field on the separated wake and on the periodic vortex shedding process.

Magnetogasdynamic deflagration under the Chapman-Jouguet condition

1965 ◽  
Vol 23 (4) ◽  
pp. 779-786 ◽  
Author(s):  
A. R. Gordon ◽  
J. B. Helliwell
Keyword(s):  
Magnetic Field ◽  
Shock Wave ◽  
Flame Front ◽  
Combustion Wave ◽  
Transverse Magnetic Field ◽  
Transverse Magnetic ◽  
One Dimensional ◽  
Electrically Conducting ◽  
Sufficient Strength

An investigation is made into the propagation of a one-dimensional combustion wave, which consists of a flame front and a precursor shock wave which pass down a tube closed at one end, in the presence of a transverse magnetic field in the undisturbed gas at rest. The shock wave is assumed to be of sufficient strength to ionize completely the initially non-electrically-conducting gas and the conditions at the flame front are taken to satisfy the Chapman–Jouguet condition. Details of the solution are compared with the corresponding results for ordinary gasdynamic deflagration.

Measurements of helical flow of a strong electrolyte with and without a transverse magnetic field

1963 ◽  
Vol 16 (2) ◽  
pp. 197-208
Author(s):  
Laurence R. Boedeker ◽  
Eugene E. Covert
Keyword(s):  
Magnetic Field ◽  
Reynolds Number ◽  
Hydrochloric Acid ◽  
Secondary Flow ◽  
Transverse Magnetic Field ◽  
Reynolds Numbers ◽  
Transverse Magnetic ◽  
Helical Flow ◽  
Experimental Results ◽  
Strong Electrolyte

This note describes the slow magneto-hydrodynamic flow of hydrochloric acid in a helix. At very low Reynolds number a transverse magnetic field is found to retard the flow in agreement with existing theory and with existing experimental results obtained using mercury. At higher Reynolds numbers where secondary flow in a helix becomes important the transverse magnetic field is found to reduce this secondary flow.

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