A joint research project including Oryx Simulations AB and VRLab at Ume̊a University aims to create real-time simulations of “complex materials”, including granular materials such as sand and gravel. A study of existing methods for rendering results from particle based simulations of granular materials has been performed. A general approach, based on the marching cubes surface extraction algorit...

Recently, techniques for acquiring, analyzing, and using 3-D shape infonnation for aggregates (sand, gravel) have been developed and demonstrated. These mathematical techniques, based on spherical hannonic coefficient analysis, have been applied to X-ray computed tomography images. X-ray microtomographic images of cement particles are required to be able to apply these same mathematical techniq...

We present large-scale parallel direct numerical simulations of granular flow using a novel, portable software program for Discrete Element Method (DEM) simulations. Since particle methods provide a unifying framework for both discrete and continuous systems, we base the program on the ppm library [1], which has already been demonstrated to provide transparent parallelization and state-of-thear...

Ruth Pearson, Blake Sherwin, and Antony Lewis Department of Physics & Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom Kavli Institute for Particle Astrophysics and Cosmology, SLAC, 2575 Sand Hill Road, Menlo Park, California 94025, USA Department of Physics, University of California, Berkeley, California 94720, USA Miller Institute for Basic Research in Science, University of ...

ABS~CT Particle-size analyses of brickearth and Clay-with-flints from Kent, England, are presented. A calcareous sample of brickearth is comparable to loess. In th~ clay fraction, there is more illite (or glauconite) than kaolin; and there is some chlorite. The clay fraction of the Clay-withflints consists of smectite, illite and quartz and is probably derived directly from the Chalk. Black san...

he fundamental arrangement of granular behavior is important to know about the soil stability and influence the design of structural foundations. The structural stability is particularly useful in earthquake events. Therefore, to work on measuring the arrangement and orientation of an assemblage of granular particle is essential. In this paper, we evaluate the porosity of the given sand images ...