Blast from explosive evaporation of carbon dioxide: experiment, modeling and physics |
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Authors: | M M van der Voort A C van den Berg D J E M Roekaerts M Xie P C J de Bruijn |
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Institution: | 1. TNO, P.O. Box 45, Lange Kleiweg 137, 2280 AA, Rijswijk, The Netherlands 2. Department of Multi-Scale Physics, Delft University of Technology, P.O. Box 5, 2600 AA, Delft, The Netherlands
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Abstract: | Explosive evaporation of a superheated liquid is a relevant hazard in the process industry. A vessel rupture during storage,
transport or handling may lead to devastating blast effects. In order to assess the risk associated with this hazard or to
design protective measures, an accurate prediction model for the blast generated after vessel rupture is needed. For this
reason a fundamental understanding of the effects of a boiling liquid expanding vapor explosion (BLEVE) is essential. In this
paper, we report on a number of well-defined BLEVE experiments with 40-l liquid CO2 bottles. The existing inertia-limited BLEVE model has been validated by its application to these experiments. Good qualitative
agreement between model and experiment was found, while quantitatively the results provide a safe estimate. Possible model
improvements taking into account the finite rate of evaporation are described. These comprise phenomena such as bubble nucleation
and growth rate, and the two-phase flow regime. Suggestions for improved experiments are given as well. |
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