Theoretical and numerical studies of constitutive relations for frictional granular flow

Technical Report · Sun Apr 01 00:00:00 EST 1990

OSTI ID:6848872

Gray, D D; Stiles, J M

This report describes progress made during the period January 1 through December 31, 1989. Most of the effort in the first three quarters of this period was devoted to assigning numerical values to material constants used in the frictional granular constitutive relationship and implementing that constitutive relationship in the computer program MFIX. MFIX is a hydrodynamic code that models the fluidized flow of solid particles of various sizes and densities. However, because of the apparent lack of success in implementing the frictional constitutive relationship in the computer program MFIX, it was decided that future work should be directed toward writing problem-specific computer programs for several test problems. The computer program CHUTE is a three-dimensional semi-implicit finite difference hydrodynamic code designed to solve the truncated momentum equation along with the other governing equations for the frictional gravity flow of granular materials down an inclined open channel. The initial results generated by program CHUTE have indicated that fatal errors are present in the subroutine that adjusts the velocities. Work to rectify these errors is in progress. 9 refs.

• Research Organization: West Virginia Univ., Morgantown, WV (USA). Dept. of Civil Engineering
• Sponsoring Organization: DOE/FE
• DOE Contract Number: FC21-87MC24207
• OSTI ID: 6848872
• Report Number(s): DOE/MC/24207-2852; ON: DE90009662
• Country of Publication: United States
• Language: English

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