|Table of Contents|

Numerical Simulation of Back Blast Flow Field for Rarefaction Wave Gun

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

Issue:
2010年03期
Page:
333-336
Research Field:
Publishing date:

Info

Title:
Numerical Simulation of Back Blast Flow Field for Rarefaction Wave Gun
Author(s):
CHEN XinCAO Cong-yongZHOU Cui-ping
School of Mechanical Engineering,NUST,Nanjing 210094,China
Keywords:
rarefaction wave guns back blast field calculation adaptive mesh
PACS:
TJ399
DOI:
-
Abstract:
To research the characteristics of the back blast flow field and determine the dangerous area,the 3D compressible Navier-Stokes equations are established according to the exhaust mode of rarefaction wave gun and the complex wave system characteristics of the back blast flow field.Based on a first order accuracy upwind total variation diminishing(TVD) scheme and adaptive mesh,the back blast flow field is numerically simulated for one rarefaction wave gun with exhaust vent in the back of breech,and the flowing disciplinarian of back blast is obtained.The result shows that though the accuracy of difference scheme is first order,the higher resolution of shock wave can also be gained by the adaptive mesh technique.The overpressure of shock waves is carried out to determine the safe range of back blast flow field of the rarefaction wave gun.

References:

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Memo

Memo:
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Last Update: 2010-06-30