Radiative and convective transfer in a cylindrical enclosure for a gas/soot mixture

Journal Article · Sun Feb 01 04:00:00 EST 1987 · Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.3248057· OSTI ID:5344878

Al-Turki, A M; Smith, T F ^[1]

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1. Univ. of Iowa, Iowa City (USA)

Energy units such as boilers, gas turbines, and steam generators have gas flows resulting from combustion of hydrocarbon fuels with combustion products of water vapor, carbon dioxide, and soot particles, all of which are strong absorbers and emitters of thermal radiation. At high temperatures and with the presence of these products, radiative heat transfer dominates conductive and convective heat transfer. Due to the size and complexity of these units, experimental data are difficult and costly to obtain, and mathematical models are sourght. Several investigators have studied radiant exchange in combustion products, but very limited results are available that incorporate the effects of soot particles in fully developed laminar or turbulent flow of a gas/soot mixture through a circular duct. Soot particles play a dominant role in the radiative heat transfer and may augment the radiant emission of absorbing gases. The purpose of this study is to examine the interaction of radiative heat transfer with convective and conductive heat transfer for flow of a radiatively participating absorbing gas and soot particle mixture. Axial and radial mixture temperature profiles along with wall heat fluxes and Nusselt numbers are sought.

• OSTI ID: 5344878
• Journal Information: Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 109:1; ISSN 0022-1481; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CONVECTION
DUCTS
ENERGY TRANSFER
FLUID FLOW
FLUIDS
GAS FLOW
GASES
HEAT FLUX
HEAT TRANSFER
LAMINAR FLOW
MASS TRANSFER
MATHEMATICAL MODELS
RADIANT HEAT TRANSFER
SOOT
TEMPERATURE DISTRIBUTION
TURBULENT FLOW
TWO-PHASE FLOW