CFD benchmark on hydrogen release and dispersion in confined, naturally ventilated space with one vent

S.G. Giannissi, Volodymyr Shentsov, Daniele Melideo, Benjamine Cariteau, Daniele Baraldi, Alexandros Venetsanos, Vladimir Molkov

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A CFD benchmark was performed within the HyIndoor project, to study hydrogen releaseand dispersion in a confined space with natural ventilation and one vent. Three experiments,performed earlier by CEA at their GAMELAN 1 m3 facility, were considered for thisbenchmark. In all three tests helium (instead of hydrogen for safety reasons) was releasedvertically upwards at 60 NL/min from a 20 mm orifice near the centre of the enclosure. Adifferent vent size was used for each test. Three HyIndoor partners (JRC, NCSRD and UU)participated in the benchmark, with three different CFD codes, (ANSYS Fluent, ADREA-HFand ANSYS CFX) and three different turbulence models respectively (transitional SST,standard k-ε, dynamic Smagorinski LES). In general, good agreement was found betweenpredicted and measured helium concentrations. However, in the case of the vent with thesmallest vertical extension (vent c) all predictions overestimate the concentration at thelower part of the enclosure at steady state.
LanguageEnglish
Pages2415-2429
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number5
DOIs
Publication statusPublished - 9 Feb 2015

Fingerprint

Vents
vents
charge flow devices
Computational fluid dynamics
Hydrogen
hydrogen
enclosure
Enclosures
Helium
helium
ventilation
turbulence models
orifices
Orifices
Turbulence models
Ventilation
safety
predictions
Experiments

Keywords

  • Hydrogen safety
  • Enclosure
  • Natural ventilation
  • CFD
  • Release and dispersion
  • Benchmark

Cite this

Giannissi, S.G. ; Shentsov, Volodymyr ; Melideo, Daniele ; Cariteau, Benjamine ; Baraldi, Daniele ; Venetsanos, Alexandros ; Molkov, Vladimir. / CFD benchmark on hydrogen release and dispersion in confined, naturally ventilated space with one vent. In: International Journal of Hydrogen Energy. 2015 ; Vol. 40, No. 5. pp. 2415-2429.
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CFD benchmark on hydrogen release and dispersion in confined, naturally ventilated space with one vent. / Giannissi, S.G.; Shentsov, Volodymyr; Melideo, Daniele; Cariteau, Benjamine; Baraldi, Daniele; Venetsanos, Alexandros; Molkov, Vladimir.

In: International Journal of Hydrogen Energy, Vol. 40, No. 5, 09.02.2015, p. 2415-2429.

Research output: Contribution to journalArticle

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