Radiation blockage by the interaction of thermal radiation with conduction and convection in the combustion of condensed fuels

Journal Article · · International Communications in Heat and Mass Transfer; (United States)

DOI:https://doi.org/10.1016/0735-1933(93)90015-N· OSTI ID:6130852

Chen, S L; Ma, H K; Chen, D Y ^[1]

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1. National Taiwan Univ., Taipei (China). Dept. of Mechanical Engineering

During the combustion process, numerous soot particles evolve from the fuel surface and act as strong absorbers to the flame radiation, thus the radiative heat flux will be substantially attenuated. A simple flame-sheet model is proposed to account for this blockage effect. The analysis considers the interaction of thermal radiation with conduction and convection heat transfer for a one-dimensional flame where soot particles dominate the absorbing-emitting process. The numerical results reveal that neglecting conductive heat transfer can cause overprediction of radiation blockage; however, neglecting the effect of convection results in an underestimation of radiation blockage.

• OSTI ID: 6130852
• Journal Information: International Communications in Heat and Mass Transfer; (United States), Journal Name: International Communications in Heat and Mass Transfer; (United States) Vol. 20:1; ISSN 0735-1933; ISSN IHMTDL
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
CHEMICAL REACTIONS
COMBUSTION
CONVECTION
ENERGY TRANSFER
FUELS
HEAT TRANSFER
MASS TRANSFER
OXIDATION
RADIANT HEAT TRANSFER
SOOT
THERMAL CONDUCTION
THERMOCHEMICAL PROCESSES