Transient Conduction With Pyrolysis (Approximate Solutions for Charring of Wood Slabs)

[+] Author and Article Information
A. M. Kanury

Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Ind. 46556

D. J. Holve

Sandia National Laboratories, Livermore, Calif. 94550

J. Heat Transfer 104(2), 338-343 (May 01, 1982) (6 pages) doi:10.1115/1.3245093 History: Received May 05, 1981; Online October 20, 2009


The rate of charring of a heated one-dimensional, wood-like solid slab is predicted by solving the transient conduction equation with a phase-change energy sink term. This solution procedure uses an integral method with spatially-linear-temperature profiles. Two types of front-face boundary conditions are considered—prescribed temperature and prescribed heat flux. The backface is insulated. The prescribed temperature condition leads to the conclusion that for all reasonable exposure temperatures, the slab would only partially char. The maximum char depth is most sensitive to the char conductivity and exposure temperature and less sensitive to the char specific heat and charring endothermicity. Results of the constant flux are in reasonable agreement with the available experimental data both qualitatively and quantitatively.

Copyright © 1982 by ASME
Your Session has timed out. Please sign back in to continue.





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 Journal Articles
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