Structure of diffusion flames from a vertical burner

Mark A. Finney; Dan M. Jimenez; Jack D. Cohen; Isaac C. Grenfell; Cyle E. Wold

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Structure of diffusion flames from a vertical burner

Informally Refereed

Authors:

Mark A. Finney, Dan M. Jimenez, Jack D. Cohen, Isaac C. Grenfell, Cyle E. Wold

Year:

2010

Type:

Miscellaneous Publication

Station:

Rocky Mountain Research Station

Source:

In: Viegas, D. X., ed. Proceedings of the VI International Conference on Forest Fire Research; 15-18 November 2010; Coimbra, Portugal. Coimbra, Portugal: University of Coimbra. 9 p.

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Abstract

Non-steady and turbulent flames are commonly observed to produce flame contacts with adjacent fuels during fire spread in a wide range of fuel bed depths. A stationary gas-fired burner (flame wall) was developed to begin study of flame edge variability along an analagous vertical fuel source. This flame wall is surrogate for a combustion interface at the edge of a deep (1.8 meters), vertically arranged fuel bed. Thermocouple and heat flux measurements along the flame wall indicate most of the variability in flame convection occurs at frequencies lower than 10-20 Hz. The variability and flame volume increased with increased height (turbulence) and fuel gas flow rate (flame mass).

Keywords

flames, turbulence, vertical burner, wall fire

Citation

Finney, Mark A.; Jimenez, Dan; Cohen, Jack D.; Grenfell, Isaac C.; Wold, Cyle. 2010. Structure of diffusion flames from a vertical burner. In: Viegas, D. X., ed. Proceedings of the VI International Conference on Forest Fire Research; 15-18 November 2010; Coimbra, Portugal. Coimbra, Portugal: University of Coimbra. 9 p.