Computational Comparison of Shock Wave Propagation in Explosive Blast and Shock Tube Experiments

2013 ◽  
Author(s):  
Kaveh Laksari ◽  
Soroush Assari ◽  
Kurosh Darvish
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Shock Tube ◽  
Mechanical Behavior ◽  
Equations Of State ◽  
Shock Wave Propagation ◽  
Published Data ◽  
Fe Model ◽  
Temple University ◽  
Computational Comparison

In this study, detonation of TNT was simulated using an FE code and the resulting mechanical behavior of air, in which the explosion took place, was studied as a function of distance. Incident and reflected pressure and impulse profiles were compared with published data. In addition, an FE model of a shock tube setup at Temple University was developed using equations of state for Helium and air as the driver and driven fluids. The characteristics of the shock wave developed from explosive blast and shock tube were compared. It was shown that merely the two variables commonly used in the literature to compare the results from a shock tube to that of blast, i.e., peak incident pressure and positive duration, could not thoroughly include all the characteristics of the shock wave. Other parameters such as reflected pressure and impulse, which includes the velocity of the particles in addition to the pressure, are also needed to describe the shock wave.

Analysis of shock-wave propagation in aqueous foams using shock tube experiments

2015 ◽  
Vol 27 (5) ◽  
pp. 056101 ◽  
Author(s):  
G. Jourdan ◽  
C. Mariani ◽  
L. Houas ◽  
A. Chinnayya ◽  
A. Hadjadj ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Shock Tube ◽  
Shock Wave Propagation ◽  
Aqueous Foams

Study on Drug Powder Acceleration in a Micro Shock Tube

2015 ◽  
Author(s):  
Guang Zhang ◽  
Heuy Dong Kim ◽  
Yingzi Jin ◽  
Toshiaki Setoguchi
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Shock Tube ◽  
Gas Flow ◽  
Stokes Equations ◽  
Supersonic Nozzle ◽  
Particle Diameter ◽  
Shock Wave Propagation ◽  
Finite Volume Scheme ◽  
Discrete Phase Model

Recently, needle-free drug delivery systems have been widely used for delivering drug particles into human body without any external needles in medical fields. Drug powders should be accelerated to obtain enough momentum to be delivered into the suitable layer of the skin. This is achieved by accelerating drug particles in a Contoured Shock Tube (CST) which consists of a micro shock tube and an expanded supersonic nozzle. Shock wave happens in micro shock tube, and supersonic flow with particles is induced by the shock wave and accelerated in the expanded nozzle. Even though micro shock tubes have been studied for a long time, detailed experimental data for shock waves and particle-gas flows are sparse to date and it is very important to investigate the complicated particle-gas flow fields for practical applications. In the present study, Particle Tracking Velocimetry (PTV) was used to measure the average velocity of the gas-particle flow behind the propagating shock wave. Unsteady flow properties and shock wave propagation were analyzed by this instantaneous particle velocity fields. Numerical simulation was performed with unsteady compressible Naver-stokes equations which were solved by using a fully implicit finite volume scheme. Discrete Phase Model (DPM) has been used for simulating particle-gas two-phase flows. Different particle diameter and density were performed in present numerical studies. Unsteady particle-gas flow characteristics and shock wave propagation have been studied and analyzed in details in present micro shock tube model.

Numerical Modelling of Shock-Wave Propagation in a Shock Tube Filled with Aqueous Foam

2015 ◽  
pp. 1511-1516
Author(s):  
D. Counilh ◽  
E. Del Prete ◽  
A. Chinnayya ◽  
A. Hadjadj ◽  
N. Rambert ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Numerical Modelling ◽  
Shock Tube ◽  
Shock Wave Propagation ◽  
Aqueous Foam

Phenomenological analysis of shock-wave propagation in weakly ionized plasmas

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 816-822
Author(s):  
Igor V. Adamovich ◽  
Vish V. Subramaniam ◽  
J. W. Rich ◽  
Sergey O. Macheret
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Phenomenological Analysis ◽  
Shock Wave Propagation ◽  
Ionized Plasmas ◽  
Weakly Ionized

scholarly journals Observation of the shock wave propagation induced by a high-power laser irradiation into an epoxy material

2013 ◽  
Vol 46 (23) ◽  
pp. 235501 ◽  
Author(s):  
Romain Ecault ◽  
Laurent Berthe ◽  
Michel Boustie ◽  
Fabienne Touchard ◽  
Emilien Lescoute ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Laser Irradiation ◽  
High Power ◽  
Shock Wave Propagation ◽  
High Power Laser ◽  
Power Laser ◽  
Epoxy Material

scholarly journals Universal shock-wave propagation in one-dimensional Bose fluids

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Romain Dubessy ◽  
Juan Polo ◽  
Hélène Perrin ◽  
Anna Minguzzi ◽  
Maxim Olshanii
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Shock Wave Propagation ◽  
One Dimensional
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