0

Full Content is available to subscribers

Subscribe/Learn More  >

Thermal Radiation in a Packed Bed With Internal Heat Generation

[+] Author Affiliations
Jaap E. Hoffmann

PBMR (Pty) Ltd., Centurion, South Africa

Paper No. HT2008-56477, pp. 485-490; 6 pages
doi:10.1115/HT2008-56477
From:
  • ASME 2008 Heat Transfer Summer Conference collocated with the Fluids Engineering, Energy Sustainability, and 3rd Energy Nanotechnology Conferences
  • Heat Transfer: Volume 1
  • Jacksonville, Florida, USA, August 10–14, 2008
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4847-0 | eISBN: 0-7918-3832-3
  • Copyright © 2008 by ASME

abstract

Thermal radiation and conduction are the main modes of heat transfer in a packed bed with internal heat generation during a loss of forced cooling incident. Due to the large number of spheres, the only feasible way of treating the bed in Computational Fluid Dynamics is through a porous medium approach. Traditionally, CFD treats a porous medium as a fluid zone, whilst fluid properties are adjusted to account for the presence of the solids. In this work, the bed is treated as a gray gass, emitting and absorbing thermal radiation at the solid temperature. A unit cell approach is used to determine the absorption and scattering coefficients. This approach prevents direct radiation between surfaces on opposite sides of the bed, but allows the free surface of the bed to exchange radiation with surrounding structures. Results generated with the proposed model were compared to modelling results using an effective conductivity (Zehner-Schlünder model [1]) to combine the contributions of conduction and radiation.

Copyright © 2008 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In