Some experiments on buoyant diffusion flames
Document Type: Journal Article
Author(s): P. H. Thomas; C. T. Webster; M. M. Raftery
Publication Year: 1961

Cataloging Information

  • combustion
  • fire damage (property)
  • fire management
  • flame length
  • fuel types
  • gases
  • Great Britain
  • laboratory fires
  • radiation
  • rate of spread
  • statistical analysis
  • temperature
  • wood
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 38408
Tall Timbers Record Number: 13010
TTRS Location Status: In-file
TTRS Call Number: Fire File DDW
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.


In flames produced by freely burning fuel, buoyancy may play an important role in determining the speed of the gases in the flame zone and hence the flame height. Measurements have been made of the height of flames from burning cribs of wood on a square horizontal base and a few for two other arrangements. The results are consistent with a dimensionless analysis, leading, for one particular fuel system, to the functional equation L/D=f(Q2/gD5), where L is the flame height, D the linear dimension of the fire or orifice, Q the volumetric flow rate of gaseous fuel at ambient temperature and g the acceleration due to gravity. In turbulent fuel jets L/D is a constant for a given fuel which is shown theoretically to be a limiting case of this relation.

Thomas, P. H., C. T. Webster, and M. M. Raftery. 1961. Some experiments on buoyant diffusion flames. Combustion and Flame, v. 5, no. 4, p. 359-367.