Turbulent combustion of hydrogen in a boundary jet discharged into a co-current supersonic air flow
A numerical analysis was made of the ignition and combustion of low-temperature hydrogen in a turbulent boundary jet discharged through a plane slit into a co-current supersonic flow of heated air. The turbulent, chemically nonequilibrium flow is described by Reynolds' system of averaged equations of motion in a boundary-layer approximation generalized to the case of a reactive multicomponent mixture. The approach used to describe the properties of a turbulent flow is connected with the concept of additional eddy viscosity. Two models of turbulence were used: an algebraic model developed for high-speed turbulent boundary jets which is based on the Prandtl mixing-length hypothesis; and the differential two-parameter model of Jones and Launder. The results of numerical analysis of a boundary jet of hydrogen discharged at sonic velocity into a co-current supersonic flow were compared with data from direct measurements to evaluate the models.
- OSTI ID:
- 6083040
- Journal Information:
- Combust., Explos. Shock Waves (Engl. Transl.); (United States), Journal Name: Combust., Explos. Shock Waves (Engl. Transl.); (United States) Vol. 23:6; ISSN CESWA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
080800 -- Hydrogen-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
AIR
AIR FLOW
BOUNDARY CONDITIONS
BOUNDARY LAYERS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION KINETICS
DIFFERENTIAL EQUATIONS
ELEMENTS
ENERGY
EQUATIONS
EQUATIONS OF MOTION
FLUID FLOW
FLUIDS
FUEL-AIR RATIO
GAS FLOW
GASES
HYDROGEN
IGNITION
IMPURITIES
ISOTHERMS
JETS
KINETIC ENERGY
KINETICS
LAYERS
MATHEMATICAL MODELS
MATHEMATICS
MIXING
NITROGEN
NONMETALS
NUMERICAL ANALYSIS
OXIDATION
OXYGEN
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
PRANDTL NUMBER
REACTION KINETICS
REYNOLDS NUMBER
SUPERSONIC FLOW
TEMPERATURE EFFECTS
THERMAL CONDUCTIVITY
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TURBULENT FLOW
VISCOSITY