A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Planar Granular Column Collapse: A Novel Releasing Mechanism
Abstract 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 $$a = H_0/R_0$$ , with $$H_0$$ and $$R_0$$ 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.
Planar Granular Column Collapse: A Novel Releasing Mechanism
Abstract 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 $$a = H_0/R_0$$ , with $$H_0$$ and $$R_0$$ 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.
Planar Granular Column Collapse: A Novel Releasing Mechanism
Pinzon, Gustavo (author) / Cabrera, Miguel Angel (author)
2018-01-01
6 pages
Article/Chapter (Book)
Electronic Resource
English
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