Bottlenecks in granular flow: When does an obstacle increase the flowrate in an hourglass?

Details Bottlenecks in granular flow: When does an obstacle increase the flowrate in an hourglass? Bottlenecks in granular flow: When does an obstacle increase the flowrate in an hourglass?

2011-09-28

arxiv.org/abs/1109.6108v1

Physics

Condensed Matter

Soft Condensed Matter

Submitted to Phys. Rev. Lett

Scientific paper

Bottlenecks occur in a wide range of applications from pedestrian and traffic flow to mineral and food processing. We examine granular flow across a bottleneck using particle-based simulations. Contrary to expectations we find that the flowrate across a bottleneck actually increases if an opti- mized obstacle is placed before it. The dependency of flowrate on obstacle diameter is derived using a phenomenological velocity-density relationship that peaks at a critical density. This relationship is in stark contrast to models of traffic flow, as the mean velocity does not depend only on density but attains hysteresis due to interaction of particles with the obstacle.

Affiliated with

Also associated with

No associations

Rating

Bottlenecks in granular flow: When does an obstacle increase the flowrate in an hourglass? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Bottlenecks in granular flow: When does an obstacle increase the flowrate in an hourglass?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bottlenecks in granular flow: When does an obstacle increase the flowrate in an hourglass? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-42740