Accession Number : AD0263247

Title :   THE INTERACTION BETWEEN A MAGNETIC FIELD AND AN ELECTRICALLY PRODUCED SHOCK WAVE

Corporate Author : MARYLAND UNIV COLLEGE PARK INST FOR FLUID DYNAMICS AND APPLIED MATHEMATICS

Personal Author(s) : BARACH,JOHN PAUL

Report Date : JUL 1961

Pagination or Media Count : 1

Abstract : Shock wave flows of speeds up to 1 cm/usec have been observed to interact with a magnetic field of 5700 gauss. A reflected shock is observed and the deceleration of the flow is measured. Gas flows of up to Mach 63 in Krypton are produced by an annular electric shock tube powered by a discharge of long time constant. A radial magnetic field provides closed paths within the gas flow for the induced currents. The speed of the wave reflected off the magnetic field is found to increase with interaction strength. The flow momentum lost per particle as the flow traverses the field region, is calculated and compared to the impulse delivered each particle by the magnetic field. Agreement is found over a wide range of experimental conditions, validating the magnetohydrodynamic picture of the interaction and the use of the scalar gas conductivity. (Author)

Descriptors :   *MAGNETIC FIELDS, *MAGNETOHYDRODYNAMICS, *SHOCK WAVES, ARGON, ELECTRIC DISCHARGES, ELECTRODES, GAS FLOW, GAS IONIZATION, KRYPTON, PLASMAS(PHYSICS), SHOCK TUBES

Distribution Statement : APPROVED FOR PUBLIC RELEASE