Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session Q28: Flow Instability: Rayleigh-Taylor/Richtmyer-Meshkov III
12:50 PM–3:26 PM,
Tuesday, November 20, 2018
Georgia World Congress Center
Room: B316
Chair: Jacob McFarland, University of Missouri
Abstract ID: BAPS.2018.DFD.Q28.11
Abstract: Q28.00011 : Simulations of a Shock-Driven Instability Developing from a Curtain of Particles*
3:00 PM–3:13 PM
Presenter:
Bertrand Rollin
(Embry-Riddle Univ)
Authors:
Bertrand Rollin
(Embry-Riddle Univ)
Rahul Babu Koneru
(University of Florida)
Frederick Ouellet
(University of Florida)
Joshua R Garno
(University of Florida)
The problem of a shock wave interacting with a corrugated curtain of solid particles is investigated using point-particle simulations. This gas-solid analog to the classic Richtmyer-Meshkov instability in which two fluids of different densities are at play may be relevant to phenomena such as the late time formation of aerodynamically stable particle jets in the context of explosive dispersal of particles or supernovae dust processing. Tracking trajectories of computational particles in the Eulerian-Lagrangian framework, the study aims to characterize the particle curtain development following the passing of a strong pressure discontinuity as a function of the initial conditions. Using a numerical shock tube containing a two-millimeter-thick particle curtain composed of heavy solid particles, we explore the effects of initial shape, particle volume fraction and shock strength on the curtain evolution in two- and three-dimensional planar geometries. Throughout the investigation, compaction phenomena are avoided by constraining simulations to initial particle volume fractions of less than 25%.
*This work was supported by the U.S. DoE, NNSA, ASC Program, as a Cooperative Agreement under the Predictive Science Academic Alliance Program, Contract No. DE-NA0002378.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.Q28.11
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