Jet fires: An experimental study of the main geometrical features of the flame in subsonic and sonic regimes
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Tipus de documentArticle
Data publicació2009-01
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Abstract
Although jet fires are usually smaller than other fires, they may lead to a destructive
chain of events that can increase the scale of an accident. Therefore, their size should
be predicted for accurate risk assessment. In the literature, most of the proposals for
estimating jet fire size concern small jet fires (up to 2.5 m in length) or subsonic
flames. In this study, experiments on relatively large propane jet fires in still air were
performed. Vertical turbulent diffusion flames up to 10 m in length, with sonic and
subsonic mass flow rates, were obtained using six different orifice exit diameters. The
experiments were filmed with video and thermographic cameras and the resulting visible
and infrared images were used to determine flame length and lift-off distance.
Expressions for estimating jet length as a function of several variables (mass flow rate,
orifice exit diameter, Froude and Reynolds numbers) are also proposed. 2008
American Institute of Chemical Engineers AIChE J, 55: 256–263, 2009
CitacióPalacios, A.; Muñoz, M.; Casal, J. Jet fires: An experimental study of the main geometrical features of the flame in subsonic and sonic regimes. "AICHE journal", Gener 2009, vol. 55, núm. 1, p. 256-263.
ISSN0001-1541
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