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Vented gaseous deflagrations: Modelling of hinged inertial vent covers

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

Molkov, Vladimir, Grigorash, Alexander, Eber, R. and Makarov, Dmitriy (2004) Vented gaseous deflagrations: Modelling of hinged inertial vent covers. Journal of Hazardous Materials, 116 (1-2). pp. 1-10. [Journal article]

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URL: http://www.ncbi.nlm.nih.gov/pubmed/15561358

Abstract

The model of explosion pressure build up in enclosures with inertial vent covers and the CINDY code implementing the model are validated against experiments by Höchst and Leuckel (1998) in a 50 m3 vessel with a pair of ceiling-mounted upwards-opening hinged doors in a ‘butterfly’ configuration with surface densities of 73 and 124 kg/m2 under conditions of initially quiescent and turbulent mixtures. The model and the code are further validated against an experiment by Zalosh (1978) in a 33.5 m3 room-like enclosure with a pair of wall-mounted rectangular doors, in a parallel configuration, each hinged at its bottom edge with a surface density of 23.1 kg/m2 and initially quiescent mixture. A formula for the torque acting upon a rotating venting door is derived under conditions of vent cover jet formation. The vent cover jet effect decreases the torque three times compared to an elementary approach valid at the start of vent cover movement. It is demonstrated that, similar to translating vent covers, the vent cover jet effect is crucial for prediction of interdependent vent cover displacement in time and pressure transients.

Item Type:Journal article
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Computing & Engineering
Faculty of Art, Design and the Built Environment > School of the Built Environment
Faculty of Computing & Engineering > School of Computing and Mathematics
Research Institutes and Groups:Built Environment Research Institute
Computer Science Research Institute
Built Environment Research Institute > Hydrogen Safety Engineering and Research Centre (HySAFER)
Computer Science Research Institute > Artificial Intelligence and Applications
ID Code:8379
Deposited By:Professor Vladimir Molkov
Deposited On:30 Aug 2010 12:24
Last Modified:09 May 2011 09:43

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