Experiments on shear layer mixing at hypervelocity conditions

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:5420528

Erdos, J; Tamango, J; Bakos, R; Trucco, R ^[1]

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1. General Applied Science Laboratories, Inc., Ronkonkoma, NY (United States)

Utilization of an expansion tube to acquire turbulent, compressible free shear layer data with gases of direct relevance to hypersonic combustion systems (nitrogen, hydrogen, and oxygen) is demonstrated. Visualizations of the free shear layer by laser holographic interferometry and schlieren imaging show a distinctly asymmetric growth rate that is highly preferential toward the lower speed (secondary stream) side. For the nitrogen/nitrogen case, for which the convective velocity was lowest and convective Mach number highest, the growth rate on the primary side was virtually zero until the mixing layer reached the opposite (secondary) wall. 11 refs.

• Research Organization: National Aeronautics and Space Administration, Hampton, VA (United States). Langley Research Center
• OSTI ID: 5420528
• Report Number(s): AIAA-Paper--92-0628; CONF-920157--
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
CHEMICAL REACTIONS
COMBUSTION
ELEMENTS
FLOW VISUALIZATION
FLUID FLOW
FLUIDS
GASES
HOLOGRAPHY
HYDROGEN
HYPERSONIC FLOW
INTERFEROMETRY
MACH NUMBER
MIXING
NITROGEN
NONMETALS
OXIDATION
OXYGEN
SHEAR
SUPERSONIC FLOW
THERMOCHEMICAL PROCESSES
VELOCITY