4 papers
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…
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…
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…
Rotational Dynamics of the Magnetic Particles in Ferrofluids
Claudio Scherer, Hans-Georg Matuttis
A new theory for the dynamics of the magnetic particles and their magnetic moments in ferrofluids is developed. Based on a generalized Lagrangian formulation for the equations of m…