Packing fraction of clusters formed in free-falling granular streams based on flash X-ray radiography
arXiv:2103.04017 · doi:10.1103/PhysRevE.103.032903
Abstract
We study the packing fraction of clusters in free-falling streams of spherical and irregularly shaped particles using flash X-ray radiography. The estimated packing fraction of clusters is low enough to correspond to coordination numbers less than 6. Such coordination numbers in numerical simulations correspond to aggregates that collide and grow without bouncing. Moreover, the streams of irregular particles evolved faster and formed clusters of larger sizes with lower packing fraction. This result on granular streams suggests that particle shape has a significant effect on the agglomeration process of granular materials.
arXiv commentAccepted for publication in Physical Review E
References in corpus (10)
- The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? II. Introducing the bouncing barrier
- The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? I. Mapping the zoo of laboratory collision experiments
- Fluffy dust forms icy planetesimals by static compression
- Size distribution of particles in Saturn's rings from aggregation and fragmentation
- Bouncing Behavior of Microscopic Dust Aggregates
- Tensile Strength of Porous Dust Aggregates
- Clustering instability in a freely falling granular jet
- Droplet and cluster formation in freely falling granular streams
- Cohesion of regolith: Measurements of meteorite powders
- Thermal conductivity and coordination number of compressed dust aggregates