The prediction of the angle of repose for raised mounds of dry cohesive granular material is a long-standing problem in the natural sciences and in industry. Using numerical (particle-based) ...

Angle of Repose(θ R): The angle between the surface of the powder pile and the horizontal plane to which a material can be piled without slumping is called the angle of repose. θ R = tan-1 (h/r) Angle ...

If slippery slopes are paved with good intentions, we now have the Transportation Department to thank for giving travel agents something new to slide around on. Let's say you're a travel agent and you ...

Fine powders and granular materials are extensively used in industrial applications. To manage and to enhance processing techniques, these materials have to be exactly characterized. The ...

It was a beautiful bluebird powder day off the backside of Snowbowl, Montana. A storm had deposited 10 inches of low-density snow and I was excited to drop into the run. As I approached the ridge, I ...

Geophysicists solve a key problem in physics and provide results that can be applied in such diverse areas as planetary research and 3-D printing / publication in ‘PNAS’ The prediction of the angle of ...

A heap is created when a powder is poured onto a surface. It is widely known that both the heap shape and the repose angle strongly rely on grain properties. Specifically, a non-cohesive powder forms ...