Accession Number : AD0710719

Title :   INVESTIGATION OF THE FEASIBILITY OF AN ELECTROGASDYNAMIC PROBE FOR MEASUREMENTS OF MEAN AND RMS VELOCITIES.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Christianson,Richard Alan

Report Date : APR 1970

Pagination or Media Count : 59

Abstract : The study involves the investigation of the feasibility of an electrogasdynamic (EGD) probe to measure mean and turbulent velocities. The free stream veolcity was 185 ft/sec and measurements were made in the wake of a circular cylinder 2 cm in diameter. Readings made with a hot-wire anemometer at the same location and in the same spectral range were used as the standard of comparison. The initial data indicated that investigations should be restricted to the region from 2 mm to 10 mm aft of the injector nozzle along the center line. Spectral data for both the hot-wire and the EGD probe measurements were obtained with a frequency analyzer and photographed from an X-Y display. The use of an EGD probe for measurements of mean and rms velocities may be feasible since the results indicate a definite correlation. The utility of the probe, however, is yet to be demonstrated since both the spatial and spectral comparisons with the hot-wire results show some lack of correspondence. The EGD unit proved to be considerably more rugged than the hot-wire probe. (Author)

Descriptors :   (*PROBES(ELECTROMAGNETIC), FEASIBILITY STUDIES), (*PLASMA MEDIUM, INTERACTIONS), CHARGED PARTICLES, ELECTRIC FIELDS, VELOCITY, MEASUREMENT, THESES

Subject Categories : Test Facilities, Equipment and Methods
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE