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Large Eddy Simulation of Cryogenic Injection Processes at Supercritical PressureThis paper highlights results from the first of a series of hierarchical simulations aimed at assessing the modeling requirements for application of the large eddy simulation technique to cryogenic injection and combustion processes in liquid rocket engines. The focus is on liquid-oxygen-hydrogen coaxial injectors at a condition where the liquid-oxygen is injected at a subcritical temperature into a supercritical environment. For this situation a diffusion dominated mode of combustion occurs in the presence of exceedingly large thermophysical property gradients. Though continuous, these gradients approach the behavior of a contact discontinuity. Significant real gas effects and transport anomalies coexist locally in colder regions of the flow, with ideal gas and transport characteristics occurring within the flame zone. The current focal point is on the interfacial region between the liquid-oxygen core and the coaxial hydrogen jet where the flame anchors itself.
Document ID
20020075593
Document Type
Conference Paper
Authors
Oefelein, Joseph C. (Sandia National Labs. Livermore, CA United States)
Date Acquired
August 20, 2013
Publication Date
April 1, 2002
Publication Information
Publication: 38th JANNAF Combustion Subcommittee Meeting
Volume: 1
Subject Category
Fluid Mechanics and Thermodynamics
Funding Number(s)
CONTRACT_GRANT: NASA Order H-33477-D
Distribution Limits
Public
Copyright
Other

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IDRelationTitle20020075551Analytic Primary38th JANNAF Combustion Subcommittee Meeting