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An inter-comparison exercise on CFD model capabilities to simulate hydrogen deflagrations in a tunnel

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Baraldi, D., Kotchourko, A., Lelyakin, A., Yanez, J., Middha, P., Hansen, O. R., Gavrikov, A., Efimenko, A., Verbecke, F., Makarov, Dmitriy and Molkov, Vladimir (2009) An inter-comparison exercise on CFD model capabilities to simulate hydrogen deflagrations in a tunnel. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 34 (18). pp. 7862-7872. [Journal article]

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DOI: 10.1016/j.ijhydene.2009.06.055

Abstract

In the frame of the European Commission co-funded Network of Excellence HySafe (Hydrogen Safety as an Energy Carrier, www.hysafe.org), five organizations with significant experience in explosion modelling have performed numerical simulations of explosions of stoichiometric hydrogen-air mixtures in a 78.5 m long tunnel. The five organizations are the Karlsruhe Research Centre, GexCon AS, the joint Research Centre, the Kurchatov institute Research Centre and the University of Ulster. Five CFD (Computational Fluid Dynamics) codes with different turbulence and combustion models have been used in this Standard Benchmark Exercise Problem (SBEP). Since tunnels are semi-confined environments, hydrogen explosions in tunnels can potentially be critical accident scenarios from the point of view of the accident consequences and CFD methods are increasingly employed to assess explosions hazards in tunnels. The objective of the validation exercise is to assess the accuracy of the theoretical and numerical models by comparisons of the simulation results with the experimental data. A very good agreement between experiments and simulations was found in terms of maximum overpressures. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

Item Type:Journal article
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Hydrogen Safety Engineering and Research Centre (HySAFER)
ID Code:7510
Deposited By:Professor Vladimir Molkov
Deposited On:19 Jan 2010 15:19
Last Modified:19 Jan 2010 15:19

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