Title: CFD benchmark on hydrogen release and dispersion in confined, naturally ventilated space with one vent
Authors: GIANNISSI StellaSHENTSOV VolodymirMELIDEO DANIELECARITEAU BenjaminBARALDI DanieleVENETSANOS AlexanderMOLKOV Vladimir
Citation: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY vol. 40 no. 5 p. 2415-2429
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication Year: 2015
JRC N°: JRC90767
ISSN: 0360-3199
URI: http://www.sciencedirect.com/science/article/pii/S0360319914033485
http://publications.jrc.ec.europa.eu/repository/handle/JRC90767
DOI: 10.1016/j.ijhydene.2014.12.013
Type: Articles in periodicals and books
Abstract: A CFD benchmark was performed within the HyIndoor project, to study hydrogen release and 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 this benchmark. In all three tests helium (instead of hydrogen for safety reasons) was released vertically upwards at 60 NL/min from a 20 mm orifice near the centre of the enclosure. A different 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-HF and ANSYS CFX) and three different turbulence models respectively (transitional SST, standard k-ε, dynamic Smagorinski LES). In general, good agreement was found between predicted and measured helium concentrations. However, in the case of the vent with the smallest vertical extension (vent c) all predictions overestimate the concentration at the lower part of the enclosure at steady state.
JRC Directorate:Energy, Transport and Climate

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