4 citations · 4 across the 5 of their papers we have counts for
7 papers
Influence of embedding depth on the pullout of a plate from a confined granular medium
Dominik Krengel, Jian Chen, Shun Nomura +1
Understanding the behaviour of moving objects within confined granular media is important in many technical applications. In this work we study the vertical pullout of a plate-like…
Self-organisation in hard-soft granular mixtures
Haoran Jiang, Dominik Krengel, Takashi Matsushima +1
Self-organisation of granular systems is a key determinant of their macroscopic behaviour and has been studied extensively in assemblies of hard particles. We use numerical simulat…
Tree codes and sort-and-sweep algorithms for neighborhood computation: A cache-conscious comparison
Dominik Krengel, Yuki Watanabe, Ko Kandori +2
Neighborhood algorithms may take a considerable percentage of computer time in discrete element methods (DEM). While the sort-and-sweep algorithm is ideal in some ways, as it only…
Vertical pullout of a non-spherical intruder from a granular medium: From system-wide response to avalanching around the intruder
Dominik Krengel, Jian Chen, Shun Nomura +2
Intruder mechanics in a granular aggregate is a common subject in engineering and geotechnical applications. However, most studies are limited to spherical intruders or small displ…
Implementing van der Waals forces for polytope particles in DEM simulations of clay
Dominik Krengel, Jian Chen, Zhipeng Yu +2
Clay minerals are non-spherical nano-scale particles that usually form flocculated, house-of-card like structures under the influence of inter-molecular forces. Numerical modeling…
Effects of particle angularity on granular self-organization
Dominik Krengel, Haoran Jiang, Takashi Matsushima +1
Recent studies of two-dimensional poly-disperse disc systems revealed a coordinated self-organisation of cell stresses and shapes, with certain distributions collapsing onto a mast…
Tree Code Based Neighborhood Algorithms for Discrete Element Methods
Yuki Watanabe, Dominik Krengel, Hans-Georg Matuttis
We report our experiences for the development of a neighborhood algorithm implemented via tree-codes to optimize the performance of a discrete element method (DEM) for convex polyt…