Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern
Help
 

GeoTreesearch


Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

(974 KB bytes)

Title: Mathematical model of a smoldering log.

Author: Costa, Fernando de Souza; Sandberg, David.

Date: 2004

Source: Combustion and Flame. 139: 227-238

Publication Series: Miscellaneous Publication

Description: A mathematical model is developed describing the natural smoldering of logs. It is considered the steady one dimensional propagation of infinitesimally thin fronts of drying, pyrolysis, and char oxidation in a horizontal semi-infinite log. Expressions for the burn rates, distribution profiles of temperature, and positions of the drying, pyrolysis, and smoldering fronts are obtained in terms of the smolder temperatures. An appropriate smolder transfer number is defined. Heat transfer by conduction, convection, and radiation inside the porous matrix of the log is considered, as are convection and radiation around the log and inside the boundary layer adjacent to the smoldering end. Solutions for the problem without circumferential heat losses and for a single front of drying and pyrolysis are also presented. The effects of variations of several parameters, such as moisture content, log diameter, pyrolysis temperature, heat of char oxidation, heat of pyrolysis, porosity, fuel density, and char density, are evaluated. The theoretical burning rates are in good agreement with available experimental data.

Keywords: fire, smoke, smoldering, log, Mathematical model, Wood, char

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
  • You may send email to pnw_pnwpubs@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


Costa, Fernando de Souza; Sandberg, David. 2004. Mathematical model of a smoldering log. Combustion and Flame. 139: 227-238

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.