Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 28, Issue 36, Pages 50363-50377Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-021-13604-3
Keywords
LES; Smoke dispersion; Fire accident; Toxic zones
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The turbulent smoke dispersion around a cubical building from a pool fire was studied using large eddy simulation at a high Reynolds number, with a focus on two different fuel pool fire accident scenarios. It was found that in both scenarios, the downstream extent of the toxic zone is approximately the same, with smoke concentration and dispersion mainly influenced by convective buoyant forces and strong turbulence mixing processes within the wake zone of the building. The study suggests that wind is the dominating factor in these accident scenarios, which result in the highest toxicity levels.
The turbulent smoke dispersion from a pool fire around a cubical building is studied using large eddy simulation at a high Reynolds number, corresponding to existing experimental measurements both in laboratory and field test scales. Emphasis of this work is on the smoke dispersion due to two different fuel pool fire accident scenarios, initiated behind the building. For the setup of fire in the first case, crude oil was used with a heat release rate of 7.8 MW, and in the second, diesel oil with a heat release rate of 13.5 MW. It is found that in both fire scenarios, the downstream extent of the toxic zone is approximately the same. This is explained in terms of the fact that the smoke concentration and dispersion are influenced mainly by the convective buoyant forces and the strong turbulence mixing processes within the wake zone of the building. It is suggested that wind is the dominating factor in these accident scenarios, which represent the conditions resulting in the highest toxicity levels.
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