Simulating vented hydrogen deflagrations: Improved modelling in the CFD tool FLACS-hydrogen
Autor: | Gordon Atanga, Helene Hisken, Trygve Skjold, L. Mauri, Melodia Lucas |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Hydrogen
Renewable Energy Sustainability and the Environment business.industry Nuclear engineering Pressure data Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Computational fluid dynamics Solver 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Fuel Technology Hydrogen safety chemistry Homogeneous Deflagration Fuel cells 0210 nano-technology business |
Zdroj: | International Journal of Hydrogen Energy 12464-12473 |
Popis: | This paper describes validation of the computational fluid dynamics tool FLACS-Hydrogen. The validation study focuses on concentration and pressure data from vented deflagration experiments performed in 20-foot shipping containers as part of the project Improving hydrogen safety for energy applications through pre-normative research on vented deflagrations (HySEA), funded by the Fuel Cells and Hydrogen 2 Joint Undertaking (FCH 2 JU). The paper presents results for tests involving inhomogeneous hydrogen-air clouds generated from realistic releases performed during the HySEA project. For both experiments and simulations, the peak overpressures obtained for the stratified mixtures are higher than those measured for lean homogeneous mixtures with the same amount of hydrogen. Using an in-house version of FLACS-Hydrogen with the numerical solver Flacs3 and improved physics models results in significantly improved predictions of the peak overpressures, compared to the predictions by the standard Flacs2 solver. The paper includes suggestions for further improvements to the model system. acceptedVersion |
Databáze: | OpenAIRE |
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