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Simulation of Hydrogen Deflagration Experiment – Benchmark Exercise with Lumped-Parameter Codes

pubblicazioni - Articolo

Simulation of Hydrogen Deflagration Experiment – Benchmark Exercise with Lumped-Parameter Codes

Un esperimento relativo alla deflagrazione dell’idrogeno (esperimento di propagazione verso l’alto della fiamma – UFPE) è stata proposto dal Jozef Stefan Institute (Slovenia) ed eseguito nella struttura HYKA A2 presso il Karlsruhe Institute of Technology (Germania). I risultati sperimentali sono stati usati per organizzare un esercizio di comparazione per codici a parametri concentrati.

An experiment on hydrogen deflagration (Upward Flame Propagation Experiment – UFPE) was proposed by the Jozef Stefan Institute (Slovenia) and performed in the HYKA A2 facility at the Karlsruhe Institute of Technology (Germany). The experimental results were used to organize a benchmark exercise for lumped-parameter codes. Six organizations (JSI, AEP, LEI, NUBIKI, RSE and UJD SR) participated in the benchmark exercise, using altogether four different computer codes: ANGAR, ASTEC, COCOSYS and ECART.

Both blind and open simulations were performed. In general, all the codes provided satisfactory results of the pressure increase, whereas the results of the temperature show a wider dispersal. Concerning the flame axial and radial velocities, the results may be considered satisfactory, given the inherent simplification of the lumped-parameter description compared to the local instantaneous description.

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