A periodic shock wave model for Mira variable atmospheres

1985 ◽  
Vol 299 ◽  
pp. 167 ◽  
Author(s):  
E. Bertschinger ◽  
R. A. Chevalier
Keyword(s):  
Shock Wave ◽  
Wave Model ◽  
Mira Variable ◽  
Periodic Shock ◽  
Shock Wave Model ◽  
Periodic Shock Wave

A shock wave model of unstable rocket combustors

AIAA Journal ◽  
1964 ◽  
Vol 2 (7) ◽  
pp. 1285-1296 ◽  
Author(s):  
L. CROCCO ◽  
W. A. SIRIGNANO
Keyword(s):  
Shock Wave ◽  
Wave Model ◽  
Shock Wave Model

scholarly journals Variability of GRB light curve: Shock wave model modification

2008 ◽  
Vol 133 ◽  
pp. 012030
Author(s):  
Saša Simić ◽  
Luka Č Popović
Keyword(s):  
Shock Wave ◽  
Light Curve ◽  
Wave Model ◽  
Model Modification ◽  
Shock Wave Model

scholarly journals Shock-wave model of the earthquake and Poincaré quantum theorem give an insight into the aftershock physics.

2018 ◽  
Vol 62 ◽  
pp. 03006
Author(s):  
Vladimir Kuznetsov
Keyword(s):  
Shock Wave ◽  
Wave Model ◽  
Particle Systems ◽  
Many Body ◽  
Initial State ◽  
Recurrence Theorem ◽  
Shock Wave Model ◽  
Quantum Phenomena ◽  
First Time ◽  
Insight Into

A fundamentally new model of aftershocks evident from the shock-wave model of the earthquake and Poincaré Recurrence Theorem [H. Poincare, Acta Mathematica 13, 1 (1890)] is proposed here. The authors (Recurrences in an isolated quantum many-body system, Science 2018) argue that the theorem should be formulated as “Complex systems return almost exactly into their initial state”. For the first time, this recurrence theorem has been demonstrated with complex quantum multi-particle systems. Our shock-wave model of an earthquake proceeds from the quantum entanglement of protons in hydrogen bonds of lithosphere material. Clearly aftershocks are quantum phenomena which mechanism follows the recurrence theorem.

The Formation of Chondrules: Petrologic Tests of the Shock Wave Model

Science ◽  
1998 ◽  
Vol 280 (5360) ◽  
pp. 62-67 ◽  
Author(s):  
H. C. Connolly Jr.
Keyword(s):  
Shock Wave ◽  
Wave Model ◽  
Shock Wave Model

Damage Due to Cavitation and Sub-Cooled Boiling Bubble Collapse

1968 ◽  
Vol 183 (1) ◽  
pp. 31-50 ◽  
Author(s):  
F. G. Hammitt
Keyword(s):  
Shock Wave ◽  
High Velocity ◽  
Wave Model ◽  
Bubble Collapse ◽  
Spherical Shock Wave ◽  
Cavitation Damage ◽  
Present Evidence ◽  
Theoretical Evidence ◽  
Shock Wave Model ◽  
Spherical Shock

The possibility of the applicability of spherical symmetry to cavitation and highly sub-cooled bubble collapse is considered in the light of present photographic and theoretical evidence, and it is concluded that such symmetry is unlikely in situations of engineering importance. Rather an asymmetry which generates a high-velocity microjet is a more likely mode of collapse. The present evidence relative to the importance of microjet impact as opposed to the classical spherical shock-wave model for cavitation damage is examined and some new experimental evidence presented. It is concluded that the microjet model is most likely of predominant importance in cavitation damage. Some estimates for the pertinent parameters of such microjets are presented.

scholarly journals Full-Scale Experimental Verification of the Explosion Shock Wave Model of a Natural Gas Pipeline

2018 ◽  
Vol 2018 ◽  
pp. 1-14
Author(s):  
Shaohua Dong ◽  
Yinuo Chen ◽  
Xuan Sun ◽  
Hang Zhang
Keyword(s):  
Shock Wave ◽  
Natural Gas ◽  
Wave Model ◽  
Full Scale ◽  
Gas Pipeline ◽  
Operating Conditions ◽  
Natural Gas Pipeline ◽  
Tnt Equivalent ◽  
The Absolute ◽  
Shock Wave Model

As developments in natural gas pipelines increasingly incorporate higher grades of steel, larger diameters, and higher pressures, the consequences of an accident caused by leakage, explosion, or ignition become progressively more severe. Currently, major technical obstacles include the quantification of the impact of an explosion shock wave of a high-strength, large-diameter natural gas pipeline, and the selection of a reasonable shock wave overpressure model appropriate to the operating conditions. In this paper, six models of shock wave overpressure theories, namely, the TNT equivalent method, the TNO method, the multienergy method, the British Gas method, the Shell method, and the Lee formula, were compared and analyzed to determine their applicability. A shock wave model adapted to the characteristics of a full-scale test was proposed, and the model verification of a full-scale blasting test was conducted on pipelines with diameters of 1422 mm and 1219 mm, respectively. Subsequent results indicated that the modifications to the TNT equivalent and the test parameters correlated with changes in the suitability of the model. Henrych’s formula calculation model of the British Gas method was found to correspond strongly with the measured value, in which the absolute value of the relative error was less than 30% and the absolute error within the range of 78 m to 800 m was no more than 0.05 MPa. Thus, the Henrych formula was adopted as the primary model formula for the shock wave overpressure calculations in this study. To further correct the error of the model, the trend between the curve obtained by the Henrych formula and the fitting curve of the measured value was compared and analyzed. The positive and negative compensations of the shaded area before and after the intersection point were carried out, and the new error correction overpressure model formula was obtained by fitting, with the error controlled within 15%.

TRANSVERSE RESONANT OSCILLATIONS IN ACOUSTIC DUCTS

2001 ◽  
Vol 09 (02) ◽  
pp. 543-551 ◽  
Author(s):  
P. VAINSHTEIN
Keyword(s):  
Shock Wave ◽  
Theoretical Study ◽  
Forced Vibrations ◽  
Far Field ◽  
Steady State Response ◽  
Two Dimensional ◽  
State Response ◽  
Periodic Shock ◽  
Acoustic Ducts ◽  
Periodic Shock Wave

A theoretical study is made of the flow induced by a piston, performing rotational sinusoidal vibrations in a uniform two-dimensional planar duct. A frequency of the forced vibrations is close to a cut-off frequency. It is shown that exactly at a cut-off frequency the steady-state response represents a transverse periodic shock wave, propagating between duct walls and decaying algebraically in the far field.

A simple approach to the analysis of ion collision cascade in solids based on the shock wave model

1983 ◽  
Vol 75 (1) ◽  
pp. 159-168 ◽  
Author(s):  
B. Rauschenbach ◽  
K. Hohmuth
Keyword(s):  
Shock Wave ◽  
Wave Model ◽  
Simple Approach ◽  
Collision Cascade ◽  
Shock Wave Model ◽  
Ion Collision

Failure of the shock-wave model in the low-pressure region?

1986 ◽  
Vol 19 (11) ◽  
pp. 2157-2169
Author(s):  
I Lauber-Altmann ◽  
F Muller
Keyword(s):  
Shock Wave ◽  
Wave Model ◽  
Low Pressure ◽  
Pressure Region ◽  
Shock Wave Model
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