Effect of reflection patterns on converging shock waves generated by underwater electrical wire array explosion

The transition from regular to irregular reflection when the expanding shock waves generated by underwater electrical wire array explosion collided with each other was investigated using the numerical method. Shadowgraph diagnostics were applied for imaging of the expansion of exploding wires and th...

Full description

Saved in:
Bibliographic Details
Published inPhysics of plasmas Vol. 27; no. 10
Main Authors Liu, Zhigang, Qian, Dun, Zou, Xiaobing, Wang, Xinxin
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.10.2020
Subjects
Arrays
Convergence
Electric wire
Exploding wires
Numerical methods
Oblique shock waves
Plasma physics
Reflection
Self alignment
Shock wave propagation
Shock waves
Underwater
Online AccessGet full text

Cover

More Information
Summary:The transition from regular to irregular reflection when the expanding shock waves generated by underwater electrical wire array explosion collided with each other was investigated using the numerical method. Shadowgraph diagnostics were applied for imaging of the expansion of exploding wires and the propagation of shock waves, and the results agreed well with the self-consistent hydrodynamic simulations based on the cylindrical piston model. The simulation results show that the transition angle from regular to irregular reflection for strong shock is smaller than weak shock, which is the principal cause of the self-alignment phenomenon in the convergence process of stronger shock waves. Also, the nonlinear superposition of pressure peak behind shock wave, caused by the formation and interaction of Mach stems, is analyzed using the oblique shock wave theory.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1070-664X
1089-7674
DOI:10.1063/5.0022006