Assessment of the finite-volume method and the discrete ordinate method for radiative heat transfer in a three-dimensional rectangular enclosure

Journal Article · Fri Jan 01 04:00:00 EST 1999 · Numerical Heat Transfer. Part B, Fundamentals

OSTI ID:328379

Kim, S H; Huh, K Y ^[1]

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1. Pohang Univ. of Science and Technology, Kyungbuk (Korea, Republic of). Dept. of Mechanical Engineering

Radiative heat transfer in participating media is an important heat transfer mode in combustion devices such as burners, furnaces, gas turbines, etc. Reduction in the flame temperature due to radiative heat loss affects the reacting flow field and the chemical kinetics of combustion and pollution production. Reduction of pollutant emissions to meet environmental regulations has been one of the primary objectives in recent designs of practical combustion devices. Now there is a consensus among engineers that numerical modeling may replace some of the costly and time-consuming test procedures to develop a more efficient combustion device with less pollutant emissions. Here, the finite-volume method (FVM) and the discrete ordinate method (DOM) are implemented to assess their capability to predict radiative heat transfer in a three-dimensional enclosure. A varying optical thickness and a nonuniform temperature profile are assumed to reproduce a typical furnace. Results show that the FVM performs better than the DOM in optically thin media, while they show comparable accuracy in optically thick media. The lower-order FVM and DOM may lead to erroneous results due to the ray effect in optically thin media with a highly nonuniform temperature profile. The 8 x 12 FVM and the S{sub 8} DOM have shown good accuracy in all the test cases in this article.

• OSTI ID: 328379
• Journal Information: Numerical Heat Transfer. Part B, Fundamentals, Journal Name: Numerical Heat Transfer. Part B, Fundamentals Journal Issue: 1 Vol. 35; ISSN 1040-7790; ISSN NHBFEE
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
42 ENGINEERING
ACCURACY
BURNERS
DISCRETE ORDINATE METHOD
EVALUATION
FINITE ELEMENT METHOD
FURNACES
GAS TURBINES
OPACITY
RADIANT HEAT TRANSFER