Modelling plume rise and dispersion from pool fires |
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| Institution: | 1. School of Earth and Environmental Sciences, The University of Greenwich, Chatham, Kent ME4 4TB, UK;2. School of Chemical and Life Sciences, The University of Greenwich, Woolwich, London SE18 6PF, UK;3. ASK Consultants, 14 Scott''s Avenue, Bromley, Kent BR2 0LQ, UK;4. Abbotsford Cove Bldg 10, 24/3 Figtree Avenue, Abbotsford, Sydney, New South Wales, Australia;1. Institute for Energy Technology – OECD Halden Reactor Project, Halden, Norway;2. Division of Applied Nuclear Physics, Uppsala University, Uppsala, Sweden;3. Westinghouse Electric Sweden AB, Fredholmsgatan 22, 72163 Västerås, Sweden;1. Department of Chemical Engineering, Maringá State University, Av. Colombo 5790, 87020-900 Maringá, PR, Brazil;2. Department of Chemical Engineering, University of Alicante, Ap Correos 99, 03080 Alicante, Spain;3. CAPES Foundation, Ministry of Education of Brazil, 70040-20 Brasília, DF, Brazil |
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| Abstract: | This paper describes an investigation into the behaviour of smoke plumes from pool fires, and the subsequent generation of empirical models to predict plume rise and dispersion from such a combustion source. Synchronous video records of plumes were taken from a series of small-scale (0.06–0.25m2) outdoor methanol/toluene pool fire experiments, and used to produce sets of images from which plume dimensions could be derived. Three models were used as a basis for the multiple regression analysis of the data set, in order to produce new equations for improved prediction. Actual plume observations from a large (20.7 m×14.2 m) aviation fuel pool fire were also used to test the predictions. The two theoretically based models were found to give a better representation of plume rise and dispersion than the empirical model based on measurements of small-scale fires. It is concluded that theoretical models tested on small-scale fires (heat output ≈70 kW) can be used to predict plume behaviour from much larger combustion sources (heat output ≈70 MW) under near neutral atmospheric conditions. |
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