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CRR 396/2001 A model for jet dispersion in a congested environment

Addresses the problem posed by the interaction of a gas jet when it encounters obstacles which when taken together can be construed as a congested environment. The aim of the project was to take an existing integral model normally applied to level, unobstructed terrain as a basis for modelling in more realistic situations. Semi-empirical methods were used to account for dilution effects and the new model applied to pre-existing data. The model is suitable for prediction of concentrations down to about 1% of the source concentration and would therefore not be suitable for toxic releases where there could still be significant harm at much lower concentrations.

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Updated 2010-03-18