Gas dynamic and physical behaviour of compressible porous foams struck by a weak shock wave

Shock Waves ◽  
1992 ◽  
pp. 511-516 ◽  
Author(s):  
B. W. Skews ◽  
M. D. Atkins ◽  
M. W. Seitz
Keyword(s):  
Shock Wave ◽  
Weak Shock ◽  
Weak Shock Wave ◽  
Physical Behaviour ◽  
Gas Dynamic

A study on the focusing phenomenon of a weak shock wave

2003 ◽  
Vol 217 (11) ◽  
pp. 1209-1220 ◽  
Author(s):  
H-D Kim ◽  
Y-H Kweon ◽  
T Setoguchi ◽  
S Matsuo
Keyword(s):  
Shock Wave ◽  
Mach Number ◽  
Peak Pressure ◽  
Weak Shock ◽  
Incident Shock ◽  
Incident Shock Wave ◽  
Weak Shock Wave ◽  
Tvd Scheme ◽  
Local Pressure ◽  
Gas Dynamic

When a plane shock wave reflects from a concave wall or when a curved shock wave reflects from a straight wall, it is focused at a certain location, resulting in extremely high local pressure and temperature. This focusing is due to a non-linear phenomenon of a shock wave. This focusing phenomenon has been extensively applied in a variety of engineering and medical areas. In the current study, the focusing phenomenon of a weak shock wave over a reflector is numerically investigated using a computational fluid dynamics (CFD) method. The total variation diminishing (TVD) scheme is used to solve the unsteady, two-dimensional, compressible, Euler equations. The Mach number of the incident shock wave is changed in the range from 1.1 to 1.5. Several different types of reflectors are employed to investigate the effect of the reflector on the focusing phenomenon of the weak shock wave. The focusing characteristics of the shock wave are investigated in terms of peak pressure, gas dynamic and geometrical foci. The results obtained are compared with previous experiment results that are available. The results show that the peak pressure of shock wave focusing and its location strongly depend on the Mach number of the incident shock wave and the reflector geometry. The location of the gas dynamic focus is always shorter than that of the geometrical one. This tendency is more remarkable as the incident shock wave becomes stronger. The present computations predict the experimental results with a very good accuracy.

Evolution of weak shock wave in two-dimensional steady supersonic flow in dusty gas

2019 ◽  
Vol 160 ◽  
pp. 552-557 ◽  
Author(s):  
Rahul Kumar Chaturvedi ◽  
Pooja Gupta ◽  
L.P. Singh
Keyword(s):  
Shock Wave ◽  
Supersonic Flow ◽  
Weak Shock ◽  
Weak Shock Wave ◽  
Dusty Gas ◽  
Two Dimensional

The physical nature of weak shock wave reflection

2005 ◽  
Vol 542 (-1) ◽  
pp. 105 ◽  
Author(s):  
BERIC W. SKEWS ◽  
JASON T. ASHWORTH
Keyword(s):  
Shock Wave ◽  
Wave Reflection ◽  
Weak Shock ◽  
Physical Nature ◽  
Weak Shock Wave ◽  
Shock Wave Reflection

A numerical study of weak shock wave propagation in a reactive bubbly liquid

Shock Waves ◽  
1996 ◽  
Vol 6 (5) ◽  
pp. 287-300 ◽  
Author(s):  
P. Mazel ◽  
R. Saurel ◽  
J. -C. Loraud ◽  
P. B. Butler
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Numerical Study ◽  
Weak Shock ◽  
Shock Wave Propagation ◽  
Weak Shock Wave ◽  
Bubbly Liquid

On the interaction between shock waves and boundary layers

1951 ◽  
Vol 47 (3) ◽  
pp. 545-553 ◽  
Author(s):  
K. Stewartson
Keyword(s):  
Boundary Layer ◽  
Shock Wave ◽  
Reynolds Number ◽  
Shock Waves ◽  
Boundary Layers ◽  
Weak Shock ◽  
Boundary Layer Separation ◽  
Weak Shock Wave ◽  
Layer Separation ◽  
Boundary Layer Equations

AbstractThe effect on the boundary-layer equations of a weak shock wave of strength ∈ has been investigated, and it is shown that ifRis the Reynolds number of the boundary layer, separation occurs when ∈ =o(R−i). The boundary-layer assumptions are then investigated and shown to be consistent. It is inferred that separation will occur if a shock wave meets a boundary and the above condition is satisfied.

scholarly journals The experimental study of the weak shock wave action on the boundary layer of the sweep flat plate

2019 ◽  
Vol 1404 ◽  
pp. 012083
Author(s):  
V L Kocharin ◽  
A D Kosinov ◽  
A A Yatskikh ◽  
L V Afanasev ◽  
Yu G Ermolaev ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Shock Wave ◽  
Experimental Study ◽  
Flat Plate ◽  
Weak Shock ◽  
Wave Action ◽  
Weak Shock Wave

scholarly journals Non-linear weak shock diffraction

1968 ◽  
Vol 8 (4) ◽  
pp. 737-754 ◽  
Author(s):  
N. J. De Mestre
Keyword(s):  
Shock Wave ◽  
Shock Front ◽  
Weak Shock ◽  
Weak Shock Wave ◽  
Shadow Region ◽  
Ray Theory ◽  
Perturbation Expansions ◽  
Shock Diffraction ◽  
Non Linear ◽  
Flow Variables

AbstractPerturbation expansions are sought for the flow variables associated with the diffraction of a plane weak shock wave around convex-angled corners in a polytropic, inviscid, thermally-nonconducting gas. Lighthill's method of strained co-ordinates [4] produces a uniformly valid expansion for most of the diffracted front, while the remainder of this front is treated by a modification of the shock-ray theory of Whitham [6]. The solutions from these approaches are patched just inside the ‘shadow’ region yielding a plausible description of the entire diffracted shock front.

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