Journal ArticleDOI
On the refraction of shock waves
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In this article, a rigorous definition of wave impedance is formulated and combined with the boundary conditions at the media interface to study both head-on and oblique shock incidence, and the refractive index is also defined and determines whether or not a wave will be refracted.Abstract:
This paper discusses the refraction of plane shock waves in media with arbitrary equations of state. Previous work is reviewed briefly, then a rigorous definition of wave impedance is formulated. Earlier definitions are shown to be unsatisfactory. The impedance is combined with the boundary conditions at the media interface to study both head-on and oblique shock incidence. The impedance determines the nature of the reflected and transmitted waves, their intensities, and the fractions of energy and power that are reflected and transmitted. The refractive index is also defined and determines whether or not a wave will be refracted, and also helps determine whether the wave system will be regular or irregular. The fundamental law of refraction is derived and shown to be a consequence of the fact that an arbitrary point on a shock or an expansion wave follows a ray path of minimum time between any two points on the path. This is a generalization of Fermat's Principle to media that are deformed and convected by the waves propagating through them.read more
Citations
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The richtmyer-meshkov instability
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James J. Quirk,Smadar Karni +1 more
TL;DR: In this article, a detailed numerical study of the interaction of a weak shock wave with an isolated cylindrical gas inhomogeneity is presented, focusing on the early phases of interaction process which are dominated by repeated refractions and reflections of acoustic fronts at the bubble interface.
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Shock-Bubble Interactions
TL;DR: When a shock wave propagates through a medium of nonuniform thermodynamic properties, several processes occur simultaneously that alter the geometry of the shock wave and the thermodynamic state of the medium as discussed by the authors.
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VORTEX PARADIGM FOR ACCELERATED INHOMOGENEOUS FLOWS: Visiometrics for the Rayleigh-Taylor and Richtmyer-Meshkov Environments
TL;DR: Kotelnikov et al. as mentioned in this paper used the vortex paradigm to guide, interpret, and model phenomena arising in numerical simulations of accelerated inhomogeneous flows, e.g. Richtmyer-Meshkov shock-interface and shock-bubble environments and Rayleigh-Taylor environments.
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Circulation deposition on shock-accelerated planar and curved density-stratified interfaces: Models and scaling laws
Ravi Samtaney,Norman J. Zabusky +1 more
TL;DR: In this paper, the authors presented analytical expressions for the circulation deposited per unit length of the unshocked planar interface, within and beyond the regular refraction regime, for both planar and non-planar interfaces.
References
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Journal ArticleDOI
Interaction of weak shock waves with cylindrical and spherical gas inhomogeneities
J.-F. Haas,Bradford Sturtevant +1 more
TL;DR: In this paper, the interaction of a plane weak shock wave with a single discrete gaseous inhomogeneity is studied as a model of the mechanisms by which finite-amplitude waves in random media generate turbulence and intensify mixing.
Journal ArticleDOI
The Riemann problem for fluid flow of real materials
Ralph Menikoff,Bradley J. Plohr +1 more
TL;DR: In this article, the properties of the isentropes and the shock Hugoniot loci that follow from conditions imposed on the equation of state are reviewed systematically, and additional questions related to shock stability and nonuniqueness of the solution of the Riemann problem are discussed.
Journal ArticleDOI
The unsteadiness of shock waves propagating through gas-particle mixtures
TL;DR: In this paper, a gas-particle mixture is initiated by a shock wave, which is decelerated by the inertia and heat capacity of the particles, and the frozen pressure jump is decaying.
Book
Front tracking and two dimensional Riemann problems
James Glimm,Christian Klingenberg,Oliver A. McBryan,Bradley J. Plohr,David H. Sharp,S. Yaniv +5 more
TL;DR: In this article, a numerical solution for the Mach reflection, a general classification scheme for two-dimensional elementary waves, and a discussion of problems and conjectures in this area are presented.
Journal ArticleDOI
The refraction of shock waves at a gaseous interface
TL;DR: In this article, a series of shock tube experiments was conducted to study the refraction of plane shock waves at interfaces between two gases, and the resulting configurations were photographed through a Mach-Zehnder interferometer.
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