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Article

Converging Cylindrical Symmetric Shock Waves in a Real Medium with a Magnetic Field

1
Department of Applied Science and Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
2
Physical Science and Engineering Division, King Abdullah University of Science & Technology, Thuwal 23955, Saudi Arabia
3
Department of Mathematics and Natural Sciences (DMNS), Prince Mohammad Bin Fahd University, Khobar 34754, Saudi Arabia
*
Author to whom correspondence should be addressed.
Symmetry 2019, 11(9), 1177; https://doi.org/10.3390/sym11091177
Received: 2 April 2019 / Revised: 11 April 2019 / Accepted: 12 April 2019 / Published: 17 September 2019
(This article belongs to the Special Issue Matrices and Symmetry)
The topic “converging shock waves” is quite useful in Inertial Confinement Fusion (ICF). Most of the earlier studies have assumed that the medium of propagation is ideal. However, due to very high temperature at the axis of convergence, the effect of medium on shock waves should be taken in account. We have considered a problem of propagation of cylindrical shock waves in real medium. Magnetic field has been assumed in axial direction. It has been assumed that electrical resistance is zero. The problem can be represented by a system of hyperbolic Partial Differential Equations (PDEs) with jump conditions at the shock as the boundary conditions. The Lie group theoretic method has been used to find solutions to the problem. Lie’s symmetric method is quite useful as it reduces one-dimensional flow represented by a system of hyperbolic PDEs to a system of Ordinary Differential Equations (ODEs) by means of a similarity variable. Infinitesimal generators of Lie’s group transformation have been obtained by invariant conditions of the governing and boundary conditions. These generators involves arbitrary constants that give rise to different possible cases. One of the cases has been discussed in detail by writing reduced system of ODEs in matrix form. Cramer’s rule has been used to find the solution of system in matrix form. The results are presented in terms of figures for different values of parameters. The effect of non-ideal medium on the flow has been studied. Guderley’s rule is used to compute similarity exponents for cylindrical shock waves, in gasdynamics and in magnetogasdynamics (ideal medium), in order to set up a comparison with the published work. The computed values are very close to the values in published articles. View Full-Text
Keywords: Lie group; similarity solutions; non-ideal magnetogasdynamics; imploding shock wave Lie group; similarity solutions; non-ideal magnetogasdynamics; imploding shock wave
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MDPI and ACS Style

Devi, M.; Arora, R.; Rahman, M.M.; Siddiqui, M.J. Converging Cylindrical Symmetric Shock Waves in a Real Medium with a Magnetic Field. Symmetry 2019, 11, 1177. https://doi.org/10.3390/sym11091177

AMA Style

Devi M, Arora R, Rahman MM, Siddiqui MJ. Converging Cylindrical Symmetric Shock Waves in a Real Medium with a Magnetic Field. Symmetry. 2019; 11(9):1177. https://doi.org/10.3390/sym11091177

Chicago/Turabian Style

Devi, Munesh, Rajan Arora, Mustafa M. Rahman, and Mohd J. Siddiqui 2019. "Converging Cylindrical Symmetric Shock Waves in a Real Medium with a Magnetic Field" Symmetry 11, no. 9: 1177. https://doi.org/10.3390/sym11091177

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