Turbulent boundary-layer diffusion flame - Effects of probability density function

Journal Article · Fri Mar 01 04:00:00 EST 1991 · AIAA Journal (American Institute of Aeronautics and Astronautics); (USA)

DOI:https://doi.org/10.2514/3.10588· OSTI ID:5661768

Chen, Chium-Hsun; Lan, Chern-Yang; Shan, D Y ^[1]

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1. National Chiao Tung Univ., Hsinchu (China) Chung Shan Institute of Science and Technology, Lungtan (China)

A turbulent diffusion flame adjacent to a solid fuel in a parallel airflow is studied analytically. The flow is assumed to be of boundary-layer type where the mean properties of flowfield are predicted by a low-Reynolds-number K-epsilon two-equation model. The chemical reaction is approximated as one-step and infinite-fast. The mean mass-fraction distribution in the boundary layer is described by a pdf. Four kinds of pdf are used: beta, clipped Gaussian, double delta, and ten-point delta, respectively. The general features of each flame structure obtained by applying the corresponding pdf are quite similar. The velocity, mixture fraction and temperature profiles appear nearly identical by the uses of beta and clipped Gaussian pdf. 25 refs.

• OSTI ID: 5661768
• Journal Information: AIAA Journal (American Institute of Aeronautics and Astronautics); (USA), Journal Name: AIAA Journal (American Institute of Aeronautics and Astronautics); (USA) Vol. 29; ISSN 0001-1452; ISSN AIAJA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR FLOW
ANALYTICAL SOLUTION
BOUNDARY LAYERS
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
COMBUSTION PROPERTIES
DIFFUSION
FLAME PROPAGATION
FLAMES
FLUID FLOW
FUELS
GAS FLOW
KINETICS
LAYERS
MATHEMATICAL MODELS
REACTION KINETICS
REYNOLDS NUMBER
SOLID FUELS
TURBULENT FLOW