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A stand-alone analytical model for downward smoke layer displacement caused by a water spray is developed. The model can be implemented into two-zone model calculations. Smoke flow into and out of the water spray envelope is incorporated, as well as a model for the heat exchange between the smoke and the water droplets. The model input quantities are water flow rate, orifice diameter, droplet diameter,...
A set of experiments is presented on the effect of a water spray on a fire-induced smoke layer. The downward smoke layer displacement as a result of the interaction with the water droplets is quantified for a wide range of settings, including variable fire conditions, smoke layer temperature, smoke layer thickness and water spray operation pressure. The experiments include temperature measurements...
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