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Open Atmosphere Detonation

Experiment ID Open atmosphere detonation
Short Description Detonation of 29.05% (by vol.) hydrogen-air quiescent mixture in the 53 m3 hemispherical balloon (diameter 2.93 m). Central point ignition source. Initial temperature is 304 K, initial pressure 99.9 kPa.
What phenomena were studied Detonation and blast wave propagation in open atmosphere.
What phenomena / effects can be studied Propagation of the detonation wave, pressure build up and pressure of the blast wave in the far field
Instrumentation Pressure transducers, high speed video.
Test variables Hydrogen concentrations (only 29.05% H2-air mixture is offered for SBEP).
Data description / Data completeness Pressure records at 0.75, 1.5, 2.75, 3.25, 5.0, 7.5, 1.0, 2.25, 4.0, 6.25, 10 m from ignition source.
Data availability Publicly unavailable (Fh-ICT report).
Source of data / Reference Pfortner H.; Ausbreitungsfunktionen detonierender Wasserstoff-Luft-Gemische; Fraunhoffer-Institut für Chemische Technologie; FhG-Projekt Nr.102555
Why were chosen Convenient basic benchmark case to evaluate a model performance for: detonation front propagation, pressure dynamics.
Relevance to the project purposes Large scale detonation in open space is a potential explosion scenario. Relevant to hydrogen explosion safety (WP10 “Hydrogen explosions”) and safety distances calculation (WP11 “Safety Measures”).
Experimental data
Results of simulations
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Page last modified on October 14, 2009, at 12:51 PM