|Table of Contents|

Numerical Investigations on Peak Overpressure of Blast Wave

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2009年06期
Page:
770-773
Research Field:
Publishing date:

Info

Title:
Numerical Investigations on Peak Overpressure of Blast Wave
Author(s):
WANG YangGUO Ze-qingJIANG Xiao-hai
National Key Laboratory of Transient Physics,NUST,Nanjing 210094,China
Keywords:
blast waves Roe scheme shock fronts Rankine-Hugoniot equation peak overpressure
PACS:
TJ302
DOI:
-
Abstract:
In order to improve the computation precision of peak overpressure of the blast wave,three point explosion cases are simulated numerically with different fine grids by using the second-order Roe scheme.Based on the numerical computational scheme of the high-precision,the blast propagation speed is calculated according to the development law of a blast wave.The indirect peak overpressure is calculated by using Rankine-Hugoniot equation and compared with the direct peak overpressure calculated by numerical simulation.The comparative result indicates that: with the increase of the mesh refinement,the direct numerical peak overpressure gradually approaches the indirect peak overpressure obtained by a blast propagation speed,while the latter is almost constant.

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Last Update: 2012-11-19