Table 7 Discrete element particle material parameters (GEMM database).

From: CFD-DEM coupling analysis of EPB screw conveyor muck discharge in water-rich sandy cobble strata

Parameter

Spoil particles

Angle of repose (°)

56 a

Bulk density (kg/m3)

1772

Coefficient of restitution

0.75

Static friction coefficient

0.20

Dynamic friction coefficient

0.15

JKR surface energy (J/m2)

90.00

  1. Note: The data with "a" are quoted from test 36.