MAGNETOHYDRODYNAMIC FLOW NEAR A STAGNATION POINT.
Abstract
Some interaction effects of a plasma flowing around a blunt body in the presence of a strong magnetic field were investigated. A one inch circular shock tube was used to provide the plasma during a testing time of approximately 30 microsec. The required magnetic field strength was produced by discharging a 0.238 F electrolytic capacitor bank through a coil. The coil axis was parallel with the axis of the shock tube, generating a purely axial magnetic field of 60,000 Gauss, over a period of 4 msec, at the stagnation point. The blunt nosed model was a 3/8 inch d. hemisphere-cylindrical body made of lucite plastic and was mounted at the center of the coil. Interaction effects of the plasma with the applied magnetic field were observed in the form of an appreciable change in stand-off distance of the bow wave. The behavior of the induced currents and the induced flux density were examined by using three pick-up coils placed around the shock tube. This arrangement also made it possible to gain some more information about the available testing time and the values of the effective electrical conductivity of the argon plasma. Calculations covering a shock Mach number range from 9 to 19 were presented and a simple theory, was worked out for the particular magnetic field configuration. The validity and the significance of the calculations and experiments are discussed together with some proposals for further work. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1968
- Accession Number
- AD0664914
Entities
People
- Elie J. Stubbe
Organizations
- University of Toronto