Boundary layer modeling of reactive flow over a porous surface with angled injection
- United Technologies Research Center, MS 129-29, 411 Silver Lane, East Hartford, CT 06108 (United States)
- Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, HI 96822 (United States)
An analytical model was developed to investigate the dynamics of nonpremixed flames in a shear layer established between a mainstream flow of fuel-rich combustion products and a porous surface with an angled injection of air. In the model, a one-step overall chemical reaction was employed, together with boundary layer conservation equations solved using similarity solutions. Parametric studies were performed to understand the effects of equivalence ratio, temperature, and mass flow rate of the fuel and air streams on the flame standoff distance, surface temperature, and heat flux at the surface. The analytical model predictions were compared with computational fluid dynamics results obtained using the FLUENT commercial code for both the laminar and the turbulent flow models. Qualitative agreement in surface temperature was observed. Finally, the flame stability limits predicted by the model were compared with available experimental data and found to agree qualitatively, as well. (author)
- OSTI ID:
- 21081124
- Journal Information:
- Combustion and Flame, Vol. 154, Issue 3; Other Information: Elsevier Ltd. All rights reserved; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BOUNDARY LAYERS
POROUS MATERIALS
INJECTION
COMPUTERIZED SIMULATION
AIR
SURFACES
FLAMES
FLUID MECHANICS
LAMINAR FLOW
TEMPERATURE DEPENDENCE
TURBULENT FLOW
FUELS
COMBUSTION PRODUCTS
FLOW RATE
HEAT FLUX
MATHEMATICAL SOLUTIONS
PARAMETRIC ANALYSIS
BURNERS
DIFFUSION
DISTANCE
MASS
SHEAR
STABILITY
COMBUSTION KINETICS
Reactive boundary layers
Porous burners
Diffusion flames
Blowing ratio