Compositions and energetics of thermal explosivesFunded under: JRC-REACTSAFE 6C
Vapour explosion is a heat transfer phenomenon in which a hot liquid (fuel) is premixed with a cold more volatile liquid (coolant) separated by a coolant vapour film, and a trigger which initiates the transfer of the thermal energy of the fuel rapidly to some portion of the coolant liquid. The energy transfer is rapid enough that strong shock waves are locally produced and propagate through the mixture, escalating the event into a quasi-steady explosive event. In the KROTOS facility such explosions have been externally triggered in a strong shock tube (95 mm ID x 1200 mm length with 20 mm wall). The high pressure mixture expands into a surrounding containment vessel of 0.3 m3. An approximate method has been developed to analyse the shock propagation data based on the Board-Hall concept of a thermal detonation together with accompanying thermodynamic considerations. The analysis determines the likely initial mixture conditions in the region of the explosion that would produce the observed shock propagation.
Bibliographic Reference: Paper presented: 14th International Colloquium of Dynamics of Explosions and Reactive Systems, Coimbra (PT), August 1-6, 1993
Availability: Available from (1) as Paper EN 37619 ORA
Record Number: 199311012 / Last updated on: 1994-11-29
Original language: en
Available languages: en