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Accession Number
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N20120013268
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Title
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Study of Forebody Injection and Mixing with Application to Hypervelocity Airbreathing Propulsion.
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Publication Date
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Jul 2012
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Media Count
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24p
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Personal Author
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A. Kumar A. Wilhite E. Axdahl
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Abstract
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The use of premixed, shock-induced combustion in the context of a hypervelocity, airbreathing vehicle requires effective injection and mixing of hydrogen fuel and air on the vehicle forebody. Three dimensional computational simulations of fuel injection and mixing from flush-wall and modified ramp and strut injectors are reported in this study. A well-established code, VULCAN, is used to conduct nonreacting, viscous, turbulent simulations on a flat plate at conditions relevant to a Mach 12 flight vehicle forebody. In comparing results of various fuel injection strategies, it is found that strut injection provides the greatest balance of performance between mixing efficiency and stream thrust potential.
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Keywords
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Computer programs
Computerized simulation
Flat plates
Forebodies
Fuel injection
Hydrogen fuels
Hypervelocity flow
Premixing
Struts
Supersonic combustion ramjet engine
Three dimensional flow
Thrust
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Source Agency
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National Aeronautics and Space Administration
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NTIS Subject Category
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97K - Fuels
81H - Rocket Propellants
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Corporate Author
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National Aeronautics and Space Administration, Hampton, VA. Langley Research Center.
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Document Type
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Conference proceedings
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Title Note
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N/A
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NTIS Issue Number
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1305
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Contract Number
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N/A
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