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author

Quentin Baker
Ming Jun Tang

published on

September 1998

Several sets of blast curves are frequently used in the prediction of blast effects from vapor cloud explosions. However, they have not been validated by experiments since systematic experimental data became available only in recently years. The aim of his paper is to present a comparison between the calculated blast curves and available experimental data. Also presented is a comparison between several blast curves.

The comparison showed that for detonations and subsonic flames, the blast curves produced by one dimensional numerical calculations are generally in agreement with experimental data. However, there is great difference between the measured and calculated overpressures for supersonic deflagrations, The experimental overpressures fall well below the calculated values and decay much faster. The discrepancy is more pronounced for less reactive mixtures. It can be concluded from the comparison that the prediction using one dimensional numerical calculations is conservative for compacted clouds and may be overly conservative for supersonic deflagrations.

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Quentin Baker

Ming Jun Tang