Experiment ID
| Open atmosphere detonation
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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.
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What phenomena were studied
| Detonation and blast wave propagation in open atmosphere.
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What phenomena / effects can be studied
| Propagation of the detonation wave, pressure build up and pressure of the blast wave in the far field
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Instrumentation
| Pressure transducers, high speed video.
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Test variables
| Hydrogen concentrations (only 29.05% H2-air mixture is offered for SBEP).
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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.
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Data availability
| Publicly unavailable (Fh-ICT report).
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Source of data / Reference
| Pfortner H.; Ausbreitungsfunktionen detonierender Wasserstoff-Luft-Gemische; Fraunhoffer-Institut für Chemische Technologie; FhG-Projekt Nr.102555
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Why were chosen
| Convenient basic benchmark case to evaluate a model performance for: detonation front propagation, pressure dynamics.
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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”).
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Experimental data
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Results of simulations
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