Accession Number:

AD0605296

Title:

STUDY OF TURBULENCE IN AN ARC PLASMA JET USING ELECTROMAGNETIC INDUCTION,

Descriptive Note:

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF

Personal Author(s):

Report Date:

1964-08-03

Pagination or Media Count:

1.0

Abstract:

Interaction of a turbulent conducting gas with a steady applied magnetic field drives fluctuatinng currennerruc currents. The unsteady magnetic field arising from these currents induces a voltage e in a sensing coil. An integral equation for e and the related partial differential equation for the electrical potential are derived. A relation between signal rms magnitude and jet properties is discussed. Experiments were conducted using an arc plasma jet operating with argon. Most of the signal was due to frequency components in the interval 10 to 100 kc. By use of two transdsnaansducers, one located downstream of the other, the average jet velocity was measured. The delay giving the peak value of the cross correlation function formed from the two signals was taken as the transit time. Methods for electronically determining the time delay are described. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE