Interaction of a shock wave with a cloud of particles

Boiko, V. M.; Киселев, В. П.; Киселев, С. П.; Papyrin, A. N.; Poplavskii, S. V.; Фомин, В. М.

doi:10.1007/bf02097090

Cited by 40 publications

(29 citation statements)

References 6 publications

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“…Thus, a detailed knowledge of the interactions that occur in dense gas-solid flows is required to develop accurate models for particle dynamics, but the data in this regime are scarce. In a rare experiment, Boiko et al (1997) compared the interactions of shock waves with spatially inhomogeneous particle fields having volume fractions of 0.1% and 3%. The 3% field had a density great enough to result in a reflected shock while no reflection was observed in the more dilute case.…”

Section: Introductionmentioning

confidence: 99%

A multiphase shock tube for shock wave interactions with dense particle fields

et al. 2012

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Currently there is a substantial lack of data for interactions of shock waves with particle fields having volume fractions residing between the dilute and granular regimes. To close this gap, a novel multiphase shock tube has been constructed to drive a planar shock wave into a dense gas-solid field of particles. A nearly spatially isotropic field of particles is generated in the test section by a gravity-fed method that results in a spanwise curtain of spherical 100-micron particles having a volume fraction of about 20%. Interactions with incident shock Mach numbers of 1.66, 1.92, and 2.02 are reported. High-speed schlieren imaging simultaneous with high-frequency wall pressure measurements are used to reveal the complex wave structure associated with the interaction. Following incident shock impingement, transmitted and reflected shocks are observed, which lead to differences in particle drag across the streamwise dimension of the curtain. Shortly thereafter, the particle field begins to propagate downstream and spread. For all three Mach numbers tested, the energy and momentum fluxes in the induced flow far downstream are reduced about 30-40% by the presence of the particle field.

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Section: Introductionmentioning

confidence: 99%

A multiphase shock tube for shock wave interactions with dense particle fields

et al. 2012

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“…A number of tests were conducted at different initial shock speeds M s and particle loadings. These experimental tests revealed the incredible multiscale nature of such a seemingly innocuous problem (see also the subsequent experimental study by Boiko et al 4 ). Over subsequent years, paralleling such new conceptual understanding was the development of powerful numerical codes.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 Related examples for the case of highly compressible flows include sprays in high-speed jet engines (air-breathing propulsion systems in which liquid-fuel droplets are typically dispersed through a gaseous environment 3 ) and a number of technological processes for the production of powder materials. 4 Compressibility effects (and shock waves) are also relevant to the behavior of exhaust plumes of rocket motors propelled by solid fuels. Recent studies along these lines have been undertaken for the development of new propulsion systems such as the so-called pulsed detonation engine.…”

Section: Introductionmentioning

confidence: 99%

On the propagation and multiple reflections of a blast wave travelling through a dusty gas in a closed box

2017

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This version is available at https://strathprints.strath.ac.uk/60148/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Accepted for Publication in the Physics of Fluids -10 March 20171 On the propagation and multiple reflections of a blast wave travelling through a dusty gas in a closed box Abstract: This paper concerns the propagation of shock waves in an enclosure filled with dusty gas. The main motivation for this problem is to probe the effect on such dynamics of solid particles dispersed in the fluid medium. This subject, which has attracted so much attention over recent years given its important implications in the study of the structural stability of systems exposed to highenergy internal detonations, is approached here in the framework of a hybrid numerical two-way coupled Eulerian-Lagrangian methodology. In particular, insights are sought by considering a relatively simple archetypal setting corresponding to a shock wave originating from a small spherical region initialized on the basis of available analytic solutions. The response of the system is explored numerically with respect to several parameters, including the blast intensity (via the related value of the initial shock Mach number), the solid mass fraction (mass load), and the particle size (Stokes number). Results are presented in terms of pressure-load diagrams. Beyond practical applications, it is shown that a kaleidoscope of fascinating patterns is produced by the "triadic" relationships among multiple shock reflections events and particle-fluid and particle-wall interaction dynamics. These would be of great interest to researchers and scientists interested in fundamental problems relating to the general theory of pattern formation in complex nonlinear multiphase systems.

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“…To take into account the dependence of the drag coefficient c D on the Reynolds and Mach number of the relative motion of particles, we use the formula derived and tested in [7] through comparisons with experimental data on the trajectories of particle motion under a shock-wave action:…”

Section: Formulation Of the Problemmentioning

confidence: 99%

Numerical study of shock-wave diffraction in variable-section channels in gas suspensions

Федоров

Kratova

Khmel

2008

Combust Explos Shock Waves

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The problem of shock-wave transition past a backward-facing step in a gas suspension is solved. The calculation method is tested on a similar problem for a pure gas, and good agreement with available experimental and numerical results is reached. The effect of shock-wave intensity, mass load factor of particles in the mixture, and particle size on the flow structure in the gas suspension is determined. It is shown that the greatest difference between the flow pattern in a two-phase mixture and the corresponding flow in a pure gas is observed in the range of times when the characteristic sizes of the structures being formed are commensurable with the scale of the relaxation zones.

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Interaction of a shock wave with a cloud of particles

Cited by 40 publications

References 6 publications

A multiphase shock tube for shock wave interactions with dense particle fields

A multiphase shock tube for shock wave interactions with dense particle fields

On the propagation and multiple reflections of a blast wave travelling through a dusty gas in a closed box

Numerical study of shock-wave diffraction in variable-section channels in gas suspensions

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