Accession Number:

AD0726532

Title:

An Experimental Investigation of a Nonequilibrium Corner-Expansion Flow of Ionized Argon,

Descriptive Note:

Corporate Author:

TORONTO UNIV (ONTARIO) INST FOR AEROSPACE STUDIES

Personal Author(s):

• Igra,Ozer

Report Date:

1970-12-01

Pagination or Media Count:

131.0

Abstract:

Experiments using a 15-degree corner-expansion flow of ionized argon, induced by a normal shock wave in a 4 in x 7 in hypervelocity shock tube, have yielded values of the recombination rate constant as a function of temperature and the variation of the plasma flow quantities with distance from the corner. The data were obtained by using mainly a Mach-Zehnder interferometer which had a nine inch diameter field of view. The interferometer had a dual frequency laser light source and was driven by either a ruby or neodymium rod. The theoretically predicted values for three-body, electron-ion-electron collisional recombination rate are in good agreement with those measured gasdynamically in a well defined flow. The measured flow quantities substantiate a previous analysis based on the method of characteristics. Author

Descriptors:

• (*GAS IONIZATION
• HYPERSONIC CHARACTERISTICS)
• (*PLASMAS(PHYSICS)
• FLOW FIELDS)
• ARGON
• SHOCK TUBES
• THERMAL PROPERTIES
• PRESSURE
• ELECTRONS
• TEST METHODS
• MODEL TESTS
• THEORY
• CORRELATION TECHNIQUES

Subject Categories:

• Fluid Mechanics
• Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE