Observation of supersonic shock wave mitigation by a plasma aero-spike

2002 ◽  
Vol 9 (2) ◽  
pp. 721-723 ◽  
Author(s):  
Daniel Bivolaru ◽  
S. P. Kuo
Keyword(s):  
Shock Wave ◽  
Supersonic Shock ◽  
Shock Wave Mitigation

Analysis of Planar and Spherical Shock-Wave Mitigation by Wet Aqueous Foams

2018 ◽  
pp. 279-297
Author(s):  
C. Breda ◽  
S. Kerampran ◽  
M.-O. Sturtzer ◽  
M. Arrigoni ◽  
J.-F. Legendre
Keyword(s):  
Shock Wave ◽  
Spherical Shock Wave ◽  
Aqueous Foams ◽  
Spherical Shock ◽  
Shock Wave Mitigation

Numerical study of shock-wave mitigation through matrices of solid obstacles

Shock Waves ◽  
2012 ◽  
Vol 23 (1) ◽  
pp. 91-101 ◽  
Author(s):  
A. Chaudhuri ◽  
A. Hadjadj ◽  
O. Sadot ◽  
G. Ben-Dor
Keyword(s):  
Shock Wave ◽  
Numerical Study ◽  
Solid Obstacles ◽  
Shock Wave Mitigation

Experimental study of unsteadiness in supersonic shock-wave/turbulent boundary-layer interactions with separation

2010 ◽  
Vol 114 (1155) ◽  
pp. 299-308 ◽  
Author(s):  
D. Estruch ◽  
D. G. MacManus ◽  
D. P. Richardson ◽  
N. J. Lawson ◽  
K. P. Garry ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Shock Wave ◽  
Turbulent Boundary Layer ◽  
High Speed ◽  
Low Frequency ◽  
Fast Response ◽  
Recirculation Region ◽  
Supersonic Wind Tunnel ◽  
Supersonic Shock ◽  
Fluctuation Energy

AbstractShock-wave/turbulent boundary-layer interactions (SWTBLIs) with separation are known to be inherently unsteady but their physical mechanisms are still not totally understood. An experimental investigation has been performed in a supersonic wind tunnel at a freestream flow Mach number of 2·42. The interaction between a shock wave created by a shock generator (α = 3°, α = 9°, α = 13° and α = 15° deflection angles) and a turbulent boundary layer with thickness δ = 5mm has been studied. High-speed Schlieren visualisations have been obtained and used to measure shock wave unsteadiness by means of digital image processing. In the interactions with separation, the reflected shock’s unsteadiness has been in the order of 102Hz. High-speed wall pressure measurements have also been obtained with fast-response micro-transducers along the interactions. Most of the energy of the incoming turbulent boundary layer is broadband and at high frequencies (>104Hz). An addition of low-frequency (<104Hz) fluctuation energy is found at separation. Along the interaction region, the shock impingement results in an amplification of fluctuation energy due to the increase in pressure. Under the main recirculation region core there is only an increase in high frequency energy (>104Hz). Amplification of lower frequency fluctuation energy (>103Hz) is also observed close to the separation and reattachment regions.

scholarly journals Aspects Regarding Shock Wave Mitigation Through Different Media

2015 ◽  
Vol 20 (2) ◽  
pp. 49-54
Author(s):  
Iuliana Florina Pană ◽  
Luminiţa Cristina Alil ◽  
Florin Ilie
Keyword(s):  
Shock Wave ◽  
Shock Waves ◽  
Random Distribution ◽  
Underwater Explosion ◽  
Second World War ◽  
World War ◽  
Biphasic Medium ◽  
Second World ◽  
Shock Wave Mitigation ◽  
Bubble Curtain

Abstract The main application of underwater detonation since the Second World War is to destroy military ships. Nowadays, a lot of studies are performed in order to discover a controlled and safe application of shock waves through different media. The paper presents the results of a research on a bubble curtain behaviour subjected to shock waves generated by an underwater TNT blast. The main objective was to analyze the mitigation solution of underwater explosion effects by means of gas bubbles. Simulations using ANSYS AUTODYN and explicit dynamics procedures were performed on a 3D model, in order to better understand the physical process of formation and propagation of a shock wave in the biphasic medium which represents the purpose of many researchers. The numerical simulations were performed taking into account the interaction between a shock wave and the bubble curtain considering a random distribution in space and bubble dimensions.

scholarly journals Shock wave mitigation propagating through a cavity

2019 ◽  
Author(s):  
A. Marty ◽  
G. Jourdan ◽  
L. Houas ◽  
C. Mariani ◽  
E. Daniel ◽  
...  
Keyword(s):  
Shock Wave ◽  
Shock Wave Mitigation

Dynamics Evolution of Shock Waves in Laser-Material Interaction

2008 ◽  
Author(s):  
Sobieslaw Gacek ◽  
Xinwei Wang
Keyword(s):  
Shock Wave ◽  
Wave Front ◽  
Shock Wave Front ◽  
Structural Evolution ◽  
Md Simulations ◽  
Background Gas ◽  
Supersonic Shock ◽  
Kinetics Of ◽  
Material Interaction ◽  
Insight Into

In this work, the dynamics of the shock wave in laser-ablated argon plume with its evolution through the background gas is explored at the atomic level. Molecular Dynamics (MD) simulations have been conducted which give the insight into atomistic scale interaction and correlation effects of the propagating shock wave in the background medium. The supersonic shock wave front carries inherent sharp increase in density, temperature, and pressure. These thermodynamic parameters of the expanding shock wave are evaluated with emphasis on the kinetics of the shock wave front. The position of the shock wave front has been defined and determined over nanoseconds. Extensive research is elaborated upon to study the inside structural evolution of the shock wave and the effect of optical absorption depth.

Bow Shock Wave Mitigation by Laser-Plasma Energy Addition in Hypersonic Flow

2008 ◽  
Vol 45 (5) ◽  
pp. 921-927 ◽  
Author(s):  
A. C. Oliveira ◽  
M. A. S. Minucci ◽  
P. G. P. Toro ◽  
J. B. Chanes ◽  
L. N. Myrabo ◽  
...  
Keyword(s):  
Shock Wave ◽  
Hypersonic Flow ◽  
Laser Plasma ◽  
Bow Shock ◽  
Plasma Energy ◽  
Bow Shock Wave ◽  
Energy Addition ◽  
Shock Wave Mitigation
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