The Relationship between Discharge Power and Shock Wave Curvature Phenomena

2020 ◽  
Vol 2020.69 (0) ◽  
pp. 601
Author(s):  
Tomoyuki MASANI ◽  
Atsushi MATSUDA ◽  
Saburo CHUBU
Keyword(s):  
Shock Wave ◽  
Discharge Power ◽  
Wave Curvature ◽  
The Relationship

From Bulbous Bow to Free-Surface Shock Wave—Trends of 20 Years’ Research on Ship Waves at the Tokyo University Tank

1981 ◽  
Vol 25 (03) ◽  
pp. 147-180
Author(s):  
Takao Inui
Keyword(s):  
Shock Wave ◽  
Free Surface ◽  
Field Measurements ◽  
Wave Pattern ◽  
Ship Waves ◽  
Second Stage ◽  
Initial Stage ◽  
Man And Nature ◽  
Bulbous Bow ◽  
The Relationship

Trends of 20 years' research on ship waves at the Tokyo University Tank since 1960 are briefly sketched. Stress is focused on the importance of dialogues between man and nature. The process of these dialogues is exemplified by some typical cases, including the development of bulbous bows and the finding of free-surface shock waves. Wave-pattern pictures are shown to be indispensable for the initial stage of the di alogues, while wave contours and velocity-field measurements serve well in the second stage. The current wave analysis and wake survey may be the third. The relationship between "wavebreaking" and the "free-surface shock wave" is also discussed.

On the flow near a weak shock wave downstream of a nozzle throat

1975 ◽  
Vol 69 (1) ◽  
pp. 97-108 ◽  
Author(s):  
A. F. Messiter ◽  
T. C. Adamson
Keyword(s):  
Shock Wave ◽  
Fluid Motion ◽  
Axisymmetric Flow ◽  
Weak Shock ◽  
Small Region ◽  
Jump Conditions ◽  
Nozzle Throat ◽  
Streamline Curvature ◽  
Two Dimensional Flow ◽  
Wave Curvature

In a transonic nozzle flow in which the velocity is slightly supersonic in some neighbourhood of the nozzle throat, a shock wave may be present either very close to the throat or else somewhat further downstream. In the latter case, relatively simple series solutions in general provide an asymptotic description of the fluid motion except very close to the shock wave. These outer solutions are reviewed for symmetric two-dimensional flow, and it is shown that the shock-wave jump conditions are not satisfied. A correction is then derived in the form of an inner solution for a small region immediately behind the shock. The resulting solution exhibits the singularities in the pressure gradient, streamline curvature and shock-wave curvature which are expected to occur at the intersection of a normal shock wave and a curved wall. An extension to axisymmetric flow is also given.

Study on the Obstruction Effect for a Large Explosion Shock Wave Tube Used the Ideal Nozzle Theory

2013 ◽  
Vol 378 ◽  
pp. 87-90
Author(s):  
Chao Cheng Wang ◽  
Hui Qi Ren ◽  
Hai Lu Wang
Keyword(s):  
Shock Wave ◽  
Mach Number ◽  
Dynamic Pressure ◽  
Pressure Ratio ◽  
Wave Tube ◽  
Large Explosion ◽  
Fundamental Equations ◽  
The Given ◽  
The Relationship ◽  
The Ideal

This paper presents a calculation on the obstruction effects for the given large explosion shock wave tube using the ideal nozzle the theory. The relationship among Mach number, Mach number ratio, dynamic pressure ratio in the nozzle throat and blocking area ratio are established according to the fundamental equations of one-dimensional steady flow, which can be taken as the reference of blocking limit design.

Boundary layers in superfluid flows and their influence on shock wave curvature

1995 ◽  
Vol 212 (2) ◽  
pp. 144-148
Author(s):  
G Stamm ◽  
J Piechna ◽  
W Fiszdon
Keyword(s):  
Shock Wave ◽  
Boundary Layers ◽  
Wave Curvature

scholarly journals Quantum chaos in topologically massive gravity

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Yan Liu ◽  
Avinash Raju
Keyword(s):  
Shock Wave ◽  
Black Holes ◽  
High Temperature ◽  
Temperature Regime ◽  
Quantum Chaos ◽  
Massive Gravity ◽  
Partial Match ◽  
The Relationship ◽  
Chern Simons ◽  
Topologically Massive Gravity

Abstract We study quantum chaos of rotating BTZ black holes in Topologically Massive gravity (TMG). We discuss the relationship between chaos parameters including Lyapunov exponents and butterfly velocities from shock wave calculations of out-of-time-order correlators (OTOC) and from pole-skipping analysis. We find a partial match between pole-skipping and the OTOC results in the high temperature regime. We also find that the velocity bound puts a chaos constraint on the gravitational Chern-Simons coupling.

Analysis on EFP Penetrating against Water-Partitioned Armor

2013 ◽  
Vol 535-536 ◽  
pp. 543-546
Author(s):  
Yuan Yuan Ju ◽  
Qing Ming Zhang ◽  
Li Yang ◽  
Zi Zheng Gong
Keyword(s):  
Numerical Simulation ◽  
Shock Wave ◽  
Dimensional Analysis ◽  
Experimental Results ◽  
Attenuation Law ◽  
Velocity Attenuation ◽  
The Relationship

Based on the experiments and numerical simulation of EFP penetrating against the water-partitioned armor, the velocity attenuation law of EFP in water is obtained by dimensional analysis. The relationship between the pressure of the water shock wave and the deflection of the latter target is established, which is validated by the experimental results. The influence of the water shock wave on the motion of EFP is also analyzed. The results in this paper provide remarkable benchmark in designing and optimizing the liner, as well as increasing the damage efficiency of the torpedo warhead.

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