Granular solids flow project: Quarterly report, January-March 1987

Technical Report · Wed Apr 01 04:00:00 EST 1987

OSTI ID:5671260

Walton, O ^[1]

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1. ed.

Research under this project is aimed at obtaining a fundamental understanding of the flow behavior of granular solids. The microstructural details of deformations of idealized materials are being studied through the use of discrete-particle computer models. Space and time averages of individual particle forces and trajectories provide macroscopic bulk-material values and comparisons with experiments provide validity and calibration of the materials models. During the current reporting period we extended the range of previous parameter studies examining the effect of friction coefficient on the stresses in steady shearing flow of mono-sized assemblies of spherical particles at various solids packing fractions. Also, in preparation for a series of calculations that will compare our computer model calculations directly with laboratory chute flow measurements conducted at UCLA, we started calibrating the input parameters in our two- and three-dimensional models to physical properties measured for the cellulose-acetate beads used in the flow tests.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5671260
• Report Number(s): UCID-20297-87-1; ON: DE88005505
• Country of Publication: United States
• Language: English

Related Subjects

640410* -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPUTERIZED SIMULATION
DOCUMENT TYPES
FLUID FLOW
FRICTION
GRANULAR MATERIALS
MATERIALS
MATHEMATICAL MODELS
PROGRESS REPORT
RESEARCH PROGRAMS
SHEAR
SIMULATION