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Development of a Multiple Absorption Coefficient Zonal Method (MACZM) for Application to Radiative Heat Transfer in Multi-Dimensional Inhomogeneous Non-Gray Media

[+] Author Affiliations
Walter W. Yuen

University of California at Santa Barbara, Santa Barbara, CA

Paper No. HT-FED2004-56285, pp. 65-77; 13 pages
doi:10.1115/HT-FED2004-56285
From:
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 4
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4693-8 | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME

abstract

The formulation of a multiple absorption coefficient zonal method (MACZM) is presented. The method can be directly applied to a fine-grid finite-difference or finite-element computation and is thus an effective approach to generate accurate assessment of the importance of radiative heat transfer in multi-dimensional inhomogeneous, non-gray media. The feasibility of the method is demonstrated by calculating the radiative exchange between a high temperature (∼3000 K) molten nuclear fuel (UO2 ) and water (with a large variation in absorption coefficient from the visible to the infrared) in a highly 3-D and inhomogeneous environment simulating the premixing phase of a steam explosion.

Copyright © 2004 by ASME

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