TY - GEN
T1 - Planar granular column collapse
T2 - A novel releasing mechanism
AU - Pinzon, Gustavo
AU - Cabrera, Miguel Angel
PY - 2018
Y1 - 2018
N2 - The granular column collapse is a simplified system of the complex dynamics observed in gravity-driven natural mass flows and granular media manufacture systems. The granular column collapse has become a benchmark case for the study of granular materials under transitional flow regimes. In the current paper, we study the granular collapse of ceramic beads in a fully two-dimensional experimental set-up with the inclusion of a novel gate mechanism, avoiding any disturbance on the granular media at release. The system is backlighted by a high-intensity LED panel, allowing a clear distinction between beads and their surroundings. The collapse runout and kinematics are studied by means of digital image analysis, combining an edge-detection technique with the particle image velocimetry method. The column mobility is studied as a function of the initial aspect ratio a=H0/R0, with H0 and R0 as the initial column height and width, respectively. Results are in agreement with previous experimental studies, recognizing the influence of a on the final column deposit and validating the experimental set-up for further studies.
AB - The granular column collapse is a simplified system of the complex dynamics observed in gravity-driven natural mass flows and granular media manufacture systems. The granular column collapse has become a benchmark case for the study of granular materials under transitional flow regimes. In the current paper, we study the granular collapse of ceramic beads in a fully two-dimensional experimental set-up with the inclusion of a novel gate mechanism, avoiding any disturbance on the granular media at release. The system is backlighted by a high-intensity LED panel, allowing a clear distinction between beads and their surroundings. The collapse runout and kinematics are studied by means of digital image analysis, combining an edge-detection technique with the particle image velocimetry method. The column mobility is studied as a function of the initial aspect ratio a=H0/R0, with H0 and R0 as the initial column height and width, respectively. Results are in agreement with previous experimental studies, recognizing the influence of a on the final column deposit and validating the experimental set-up for further studies.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-85060175625&partnerID=MN8TOARS
U2 - 10.1007/978-3-319-97112-4_132
DO - 10.1007/978-3-319-97112-4_132
M3 - Conference contribution
SN - 978-3-030-07305-3
SN - 978-3-319-97111-7
VL - 1
T3 - Springer Series in Geomechanics and Geoengineering
SP - 591
EP - 596
BT - Proceedings of China-Europe Conference on Geotechnical Engineering
A2 - Wu, Wei
A2 - Yu, Hai-Sui
PB - Springer
ER -