The structure of selffield accelerated plasma flows
Abstract
An analysis is presented of selffield accelerated quasionedimensional plasma flows with zero axial current. The dominance of magnetic convection over diffusion leads to the formation of inlet and exit concentration layers which are analyzed by asymptotic matching. The sonic passage condition is found to control injector conditions, but not channel voltage. Throats are shown to be approximately magnetosonic. Performance factors accounting for inlet convergence and nozzle divergence are derived by exploiting the smallness of pressure forces. The effect of finite magnetic Reynolds numbers is seen to be moderate down to Rm of about 3 for contoured channels, but to Rm of about 10 for constantarea channels. Contouring is shown to be effective for control of current and dissipation concentrations.
 Publication:

AIAA
 Pub Date:
 May 1987
 Bibcode:
 1987iep..conf.....M
 Keywords:

 Computational Fluid Dynamics;
 Flow Geometry;
 Magnetohydrodynamic Flow;
 Magnetoplasmadynamics;
 One Dimensional Flow;
 Plasma Acceleration;
 Current Density;
 Magnetic Effects;
 Plasma Engines;
 Reynolds Number;
 Plasma Physics