Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session ZC35: Particle-Laden Flows and Fluidization
12:50 PM–3:00 PM,
Tuesday, November 21, 2023
Room: 202A
Chair: Federico Municchi, Colorado School of Mines
Abstract: ZC35.00005 : New Physics Revealed by the Particle-Fluid-Particle Stress*
1:42 PM–1:55 PM
Presenter:
Min Wang
(Los Alamos National Laboratory)
Authors:
Min Wang
(Los Alamos National Laboratory)
Duan Z Zhang
(Los Alamos National Laboratory)
S Balachandar
(University of Florida)
To study dynamics of nearest particle interactions, the age of the nearest particle pair is introduced. The probability distribution of the ages of the nearest particle pairs is found exponential. The relaxation time of age probability distribution is also the relaxation time of PFP stress. Furthermore, anisotropy and inhomogeneity of particle distributions are seen to develop driven by the PFP stress. The mean distances to the nearest particles and evolution of Voronoi cell volume distribution are studied to confirm the variation of meso-structure of particle packings.
*The financial support was provided by Exascale Computing Program (ECP), the Joint DoD/DOE Munitions Program, and the Advanced Simulation and Computing (ASC) program under the auspices of the United States Department of Energy.
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