A Numerical Model for Flow of Granular Materials in Silos. Part 2: Model Validation

Modeling stationary and moving pebbles in a pebble bed reactor

“…DEM studies can enhance the understanding. The wall pressures along the silo height obtained by discrete element simulations agree well with the results from finite element simulations, analytical approaches or experiments (Langston et al, 1995a;Negi et al, 1997;Holst et al, 1999a, b;Rotter et al, 1998;Masson and Martinez, 2000a, b;Goda and Ebert, 2005). Furthermore, it has also been reported that the wall pressure is affected by particle shape (Cleary and Sawley, 2002) and airassisted flow which leads to increased wall stresses (Langston et al, 1996).…”

Flowability and Handling Characteristics of Bulk Solids and Powders - A Review

“…Furthermore it can be used for three dimensional applications and for simulating silo filling with some modifications. Negi et al (1997) verified the hybrid numeric model developed by Lu et al (1997) for modeling the gravity flow of granular materials in silos and bins. Their computer simulations successfully matched most of the observed features of the physical tests.…”

Model for the deformation in agricultural and food particulate materials under bulk compressive loading using discrete element method. I: Theory, model development and validation

“…The critical time step can either be chosen arbitrarily (Hryciw et al, 1997;Sakaguchi et al, 1994) or calculated (Cundall & Strack, 1979;Rong et al, 1993;Taylor & Preece, 1992). A number of equations have been put forward for the determination of the critical time step (Cundall & Strack, 1979;Negi et al, 1997;Ning, 1995;Taylor & Preece, 1992). However the criterion using the natural…”