Incident and Normally Reflected Overpressure and Impulse for Detonations of Spherical High Explosives in Free Air
This article has been corrected.
VIEW CORRECTIONPublication: Journal of Structural Engineering
Volume 141, Issue 12
Abstract
Air-blast parameters, including incident and reflected peak overpressures and impulses, and shock-front arrival times, are typically estimated for protective design using charts developed by Kingery and Bulmash. The charts underpredict incident and normally reflected peak overpressures and incident impulse near the face of the charge. Numerical analyses of detonations of spherical charges of trinitrotoluene in free air are performed using a verified and validated computational fluid dynamics (CFD) code to understand the shortcomings of current approaches for calculating incident and normally reflected overpressures and impulses, and for shock-front arrival time. New equations and design charts are proposed based on CFD calculations.
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Acknowledgments
The financial support for the studies described herein was provided by MCEER (http://www.mceer.buffalo.edu) under Thrust Area 3, Innovative Technologies, through a grant from the State of New York. This support is gratefully acknowledged. Any opinions, findings, conclusions or recommendations expressed in this paper are the authors and do not necessarily reflect those of MCEER, the State of New York, or Arup.
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Journal of Structural Engineering
Volume 141 • Issue 12 • December 2015
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© 2015 American Society of Civil Engineers.
History
Received: Jun 17, 2014
Accepted: Feb 12, 2015
Published online: Apr 6, 2015
Discussion open until: Sep 6, 2015
Published in print: Dec 1, 2015
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