Published in Granular Matter
AbstractDuring marine transport of coal commodities, cargo slip or liquefaction failure scenarios within the hold may occur under cyclic ship motions. The resulting cargo shift affects the vessel stability, and subsequently endangers goods and crews on board the vessel. This study aims to investigate the coal cargo stability under marine transport ...
Published in Granular Matter
When two granular phases are brought into motion in a rotating drum, a competition of mixing and segregation occurs. Several image analysis methods have been used to quantify the mixing. In this work, a modification of the contact method, originally proposed by Van Puyvelde et al. (Powder Technol. 106, 183–191 (1999)), is suggested to allow evaluat...
Published in Granular Matter
Ellipsoidal grains show a complex macroscopic response associated with their microscopic ability to orient and align with respect to each other and the ambient flow. These additional microscopic degree of freedom is an evolving property that gives rise to a complex anisotropic macroscopic mechanical response. Available models for dense granular flo...
Published in Granular Matter
This work performs further study on the discrete thermal element method (DTEM) (Feng et al., J. Comput. Phys. 227, 5072–5089 (2008)) of heat conduction in particle systems involving a large number of circular particles in 2D cases. Feng proposed the DTEM based on particular solution for the Laplace equation in a circular domain with Newmann boundar...
Published in Granular Matter
Pore characteristics play central roles in the transport of water and gas through granular soils, which is relevant to a wide range of geotechnical and geoenvironmental applications. In this study, a numerical procedure combining the discrete element method and pore network model is presented to relate the physically representative pore structure t...
Published in Granular Matter
We present a reduced-dimensional proper orthogonal decomposition (POD) solver to accelerate discrete element method (DEM) simulations of the granular mixing problem. We employ the method of snapshots to create a low-dimensional solution space from previous DEM simulations. By reducing the dimensionality of the problem, we accelerate the calculation...
Published in Granular Matter
AbstractThe porosity distribution of burden layers in the blast furnace (BF) plays an important role for the gas distribution and gas–solid two-phase interaction. In this work, the porosity distribution along the radial and vertical directions of the BF throat was studied by the discrete element method combined with some experimental verification. ...
Published in Granular Matter
AbstractWe investigated experimentally the tribological behavior of tailing grain contacts using a micromechanical apparatus which allows high precision of force and displacement measurements to derive contact stiffness. A technique was developed to apply biopolymer coating to the grain surfaces and the emphasis of the study was placed on the inves...
Published in Granular Matter
Transporting finer fractions inside the soil skeleton or the erosion of base soils within the filter are the two main challenges for earthen hydraulic structures, their foundations, and filter design. Soil particle morphology could influence pore size distribution and transport of fine grains; however, there is not sufficient knowledge on the effec...
Published in Granular Matter
We use particle simulations to investigate the mass flow in two-dimensional hopper flow and to analyze the dependency of the flow rate with the bottleneck width and the particle diameter. A flow rate law is derived from self-similar velocity and density profiles at the neck. The resulting relation is an enhancement of the Beverloo relation that inc...
