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An application of 3D gasdynamic modeling for the prediction of overpressures in vented enclosures

Karnesky, J. and Chatterjee, P. and Tamanini, F. and Dorofev, S. (2007) An application of 3D gasdynamic modeling for the prediction of overpressures in vented enclosures. Journal of Loss Prevention in the Process Industries, 20 (4-6). pp. 447-454. ISSN 0950-4230.

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A three-dimensional gasdynamic model with constant burning rate is applied for the prediction of the maximum pressure rise from gaseous combustion in vented enclosures. A series of calculations for an enclosure with aspect ratio close to unity are presented. Both cases with and without obstacles in the enclosure are considered. Results of calculations are compared with a simple 0D solution for spherical vessels. It is shown that, in cases without obstacles, the 0D solution for the maximum reduced overpressures is close to the predictions of the detailed modeling. In cases with obstacles, the detailed simulation gives significantly higher overpressures than those from the 0D model. However, in all the cases the reduced pressures are correlated well with the maximum flame surface area.

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Additional Information:© 2007 Elsevier. Received 6 November 2006; revised 13 April 2007; accepted 13 April 2007; available online 29 April 2007.
Subject Keywords:Gas explosions; Venting; Vent sizing; Modeling
Issue or Number:4-6
Record Number:CaltechAUTHORS:20100916-113059219
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19986
Deposited By: Jason Perez
Deposited On:16 Sep 2010 20:47
Last Modified:03 Oct 2019 02:04

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