Gilpin, Robert R. and Zukoski, Edward E. (1969) Experimental and Theoretical Studies of Electrothermal Waves. AIAA Journal, 7 (8). pp. 1438-1445. ISSN 0001-1452 http://resolver.caltech.edu/CaltechAUTHORS:20101221-100324714
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Experimental and theoretical studies have been made of the electrothennal waves occurring in a nonequilibrium electrical discharge in a potassium-seeded argon plasma. The studies presented in this paper refer to discharges in transverse gas flow and magnetic field. The behavior of these discharges as determined by photographs, photomultiplier measurements, and voltage probes is discussed and the results interpreted in terms of a steady, one-dimensional theory. A single discharge was found to operate in one of three modes-the shorted, transition, or normal mode-depending on the length of the ionization transient. An extension of the one-dimensional theory to the inlet problem predicts the approximate length of this transient and thus provides criteria for the existence of each mode. The normal mode was studied in a duct with a series of circuits discharging in parallel across a gas flow. Here, a regular set of steady, one-dimensional streamers was found in the center of the duct between hot boundary regions along each electrode wall. The properties of the one-dimensional streamers are shown to agree in detail with values predicted from the one-dimensional theory. A scheme is then presented for calculation of the effective conductivity of a duct using the amplitude of conductivity fluctuations predicted by this theory.
|Additional Information:||© 1969 American Institute of Aeronautics and Astronautics. Received June 6, 1968; revision received February 17, 1969. This work was supported by the Air Force Office of Scientific Research under Contract AF 49(638)-1285. Reprinted from AIAA Journal Vol. 7, No.8, Aug. 1969, pp. 1438-1445.|
|Group:||Guggenheim Jet Propulsion Center|
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|Official Citation:||Experimental and theoretical studies of electrothermal waves. pages 1438-1445 GILPIN, R. R. /TORONTO, U., INST. FOR AEROSPACE STUDIES, TORONTO, CANADA/;ZUKOSKI, E. E. /CALIFORNIA INST. OF TECH., DANIEL AND FLORENCE GUGGENHEIM JET PROPULSION CENTER, KARMAN LAB. OF FLUID MECHANICS AND JET PROPULSION, PASADENA, CALIF., AIAA Journal (0001-1452) 1969 vol.7 no.8|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||23 Dec 2010 18:56|
|Last Modified:||26 Dec 2012 12:47|
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