Submitted by sedimentexp on Sun, 03/15/2015 - 20:47
In this experiment, a laminar flow shear a bed of particles, which are fully tracked, using Refractive Index Matching, and image analysis.
Dataset corresponding to data represented in the paper published at Nature Communications:
Submitted by leslie on Tue, 11/04/2014 - 16:31
We conducted laboratory experiments to test the hypothesis that bedrock erosion is related to grain collisional stresses which scale with shear rate and particle size. We placed granular material in a 56-cm-diameter rotating drum to explore the relationship between erosion of a synthetic bedrock sample and variables such as grain size, shear rate, water content, and bed strength.
The experiments (ongoing, 2013-2014) focus on granular flow in a rotating drum in the enhanced-g environment of a centrifuge, following the precedent of Brucks et al. , to span the regimes from avalanching to cascading flow, in a range of 1 to 200g.