Numerical Algorithms for Two-Dimensional Dry Granular Flow with Deformable Elastic Grain

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The authors consider the dynamics of interacting elastic disks in the plane. This is an experimentally realizable two-dimensional model of dry granular flow where the stresses can be visualized using the photoelastic effect. As the elastic disks move in a vacuum, they interact through collisions with each other and with the surrounding geometry. Because of the finite propagation speed of deformations inside each grain it can be difficult to capture computationally even simple experiments involving just a few interacting grains. The goal of this project is to improve our ability to simulate dense granular flow in complex geometry. They begin ... continued below

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PDF-file: 29 pages; size: 0.5 Mbytes

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Boateng, H A; Elander, V; Jin, C; Li, Y; Vasquez, P & Fast, P August 11, 2005.

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The authors consider the dynamics of interacting elastic disks in the plane. This is an experimentally realizable two-dimensional model of dry granular flow where the stresses can be visualized using the photoelastic effect. As the elastic disks move in a vacuum, they interact through collisions with each other and with the surrounding geometry. Because of the finite propagation speed of deformations inside each grain it can be difficult to capture computationally even simple experiments involving just a few interacting grains. The goal of this project is to improve our ability to simulate dense granular flow in complex geometry. They begin this process by reviewing some past work, how they can improve upon previous work. the focus of this project is on capturing the elastic dynamics of each grain in an approximate, computationally tractable, model that can be coupled to a molecular dynamics scheme.

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PDF-file: 29 pages; size: 0.5 Mbytes

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  • Report No.: UCRL-TR-214615
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/878625 | External Link
  • Office of Scientific & Technical Information Report Number: 878625
  • Archival Resource Key: ark:/67531/metadc875995

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  • August 11, 2005

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 30, 2016, 1:38 p.m.

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Boateng, H A; Elander, V; Jin, C; Li, Y; Vasquez, P & Fast, P. Numerical Algorithms for Two-Dimensional Dry Granular Flow with Deformable Elastic Grain, report, August 11, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc875995/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.