Analysis of shock wave induced by underwater pulsed discharge using discharge current interception

2020 ◽  
Vol 127 (14) ◽  
pp. 143301
2017 ◽  
Vol 118 (04) ◽  
pp. 228-232 ◽  
Author(s):  
G. Ozmerdiven ◽  
B. A. Vuruskan ◽  
O. Kaygisiz ◽  
H. Vuruskan

2017 ◽  
Vol 57 (1) ◽  
pp. 71-77
Author(s):  
Vladimir Yuferov ◽  
Sergey Shariy ◽  
Tetiana Tkachova ◽  
Vyacheslav Katrechko ◽  
Alexander Svichkar ◽  
...  

Calculated trajectories of ions with different masses, indicating the possibility of a mixture separation, are obtained. Comparative experiments for plasma of monatomic and polyatomic gases (Ar, N<sub>2</sub>, CO<sub>2</sub>), upon combination of pulsed discharge with a stationary one with incandescent cathode, are carried out. The oscillograms of discharge current and voltage at low emission currents and a constant energy input show that energy is spent on other processes different from ionization. With an increase of emission current, the nonlinear character of the discharge current and voltage, which may be indicative of the role of dissociation and vibrational levels in energy consumption, is observed. In addition, there is connection between the number of atoms in molecule and the values of maximum discharge current and the pressure of injected gas.


AIAA Journal ◽  
2010 ◽  
Vol 48 (7) ◽  
pp. 1480-1493 ◽  
Author(s):  
Louis J. Souverein ◽  
Pierre Dupont ◽  
Jean-Francois Debiève ◽  
Jean-Paul Dussauge ◽  
Bas W. van Oudheusden ◽  
...  

1994 ◽  
Vol 8 (2) ◽  
pp. 105-110 ◽  
Author(s):  
KAI UWE KÖHRMANN ◽  
WALTER BACK ◽  
JÖRG BENSEMANN ◽  
JÜRGEN FLORIAN ◽  
ALWIN WEBER ◽  
...  

Author(s):  
Fengyu Ren ◽  
Yang Liu ◽  
Jianli Cao ◽  
Rongxing He ◽  
Yuan Xu ◽  
...  

In this paper, a two-phase model of air shock wave induced by rock-fall was described. The model was made up of the uniform motion phase (velocity was close to 0 m&middot;s-1) and the acceleration movement phase. The uniform motion phase was determined by experience, meanwhile the acceleration movement phase was derived by the theoretical analysis. A series of experiments were performed to verify the two-phase model and obtained the law of the uniform motion phase. The acceleration movement phase was taking a larger portion when height of rock-fall was higher with the observations. Experimental results of different falling heights showed good agreements with theoretical analysis values. Computational fluid dynamics (CFD) numerical simulation had been carried out to study the variation velocity with different falling height. As a result of this, the two-phase model could accurately and convenient estimating the velocity of air shock wave induced by rock-fall. The two-phase model could provide a reference and basis for estimating the air shock waves' velocity and designing the protective measures.


Shock Waves ◽  
1998 ◽  
Vol 8 (3) ◽  
pp. 173-176 ◽  
Author(s):  
K.D. Joshi ◽  
N. Suresh ◽  
G. Jyoti ◽  
S.K. Kulshreshtha ◽  
S.C. Gupta ◽  
...  

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