Validation of CFD-model for hydrogen dispersion |
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| Authors: | Prankul Middha Olav R Hansen Idar E Storvik |
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| Institution: | 1. School of Energy and Power Engineering, Xi''an Jiaotong University, Xi''an 710049, China;2. State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing 100028, China;1. College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, China;2. Institute of Oceanographic Instrument of Shandong Academy of Science, 29 Zhejiang Road, Qingdao, 266001, China;1. Environmental Research Laboratory, National Center for Scientific Research Demokritos, Aghia Paraskevi, Athens 15310, Greece;2. HySAFER Centre, University of Ulster, Newtownabbey BT37 0QB, UK;3. European Commission, Joint Research Centre (JRC), Institute for Energy and Transport (IET), Energy Conversion and Storage Technologies Unit, Westerduinweg 3, 1755 LE Petten, Netherlands;4. C.E.A. Saclay, D.E.N., D.M.2S., S.T.M.F, Laboratoire d''Instrumentation et Expérimentation en mécanique des Fluides et Thermohydraulique, 91191 Gif sur Yvette Cedex, France;1. Environmental Research Laboratory, National Center for Scientific Research Demokritos, Agia Paraskevi, 15341, Greece;2. HySAFER Centre, Ulster University, Newtownabbey, BT37 0QB, UK;3. Health and Safety Executive, Harpur Hill, Buxton, SK17 9JN, UK;4. Karlsruhe Institute for Technology (KIT), Kaiserstrasse 12, Karlsruhe, Germany;5. European Commission, Joint Research Centre (JRC), IET, Westerduinweg 3, 1755 LE, Petten, Netherlands;6. Element Energy Limited, Station Road 20, Cambridge, United Kingdom;7. Areva Stockage D''Energie SAS, Batiment Jules Verne, Domaine Du Petit Arbois, Aix-en-Provence, France |
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| Abstract: | To be able to perform proper consequence modelling as a part of a risk assessment, it is essential to be able to model the physical processes well. Simplified tools for dispersion and explosion predictions are generally not very useful. CFD tools have the potential to model the relevant physics and predict well, but without proper user guidelines based on extensive validation work, very mixed prediction capability can be expected. In this article, recent dispersion validation effort for the CFD tool FLACS–HYDROGEN is presented. A range of different experiments is simulated, including low-momentum releases in a garage, subsonic jets in a garage with stratification effects and subsequent slow diffusion, low momentum and subsonic horizontal jets influenced by buoyancy, and free jets from high-pressure vessels. LH2 releases are also considered. Some of the simulations are performed as blind predictions. |
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