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Document ID (ISN)55639
CIS number 91-605
ISBN(s) 0-85-356345-4
Year 1990
Convention or series no. SRD/HSE/R 520
Author(s) Wheatley C.J., Martin D.
Safety and Reliability Directorate
Title The effect of obstrucions on combustion in flammable vapour clouds - steady state combustion
Bibliographic information United Kingdom Atomic Energy Authority, Wigshaw Lane, Culcheth, Warrington WA3 4NE, United Kingdom, 1990. 48p. Illus. 13 ref.
Abstract In this report, the combustion of flammable mixtures in the presence of obstacles is considered in order to quantify the dependence of overpressures on the amount of obstruction and the mixture properties. Similarity solutions to a one-dimensional combustion model are derived which enable steady-state flame speeds and overpressures to be calculated for a specified burning velocity. Simple models are presented which relate this burning velocity to geometric features of the flow field. Comparisons with experimental data support the existence of a threshold for the amount of obstruction above which flame speeds and overpressures are substantial, although no precise relationship has been identified.
Descriptors (primary) flammable gases; vapour clouds; fire hazards
Descriptors (secondary) overpressure; mathematical models; fire behaviour
Document type E - Books, reports, proceedings
Country / State or ProvinceUnited Kingdom
Subject(s) Fire and explosions
Broad subject area(s) Fires, explosions and major hazards
Browse category(ies) Explosions