Calculating the explicit probability of entrainment based on inertial acceleration measurements

Maniatis, G., Hoey, T. B. , Hassan, M. A., Sventek, J., Hodge, R., Drysdale, T. and Valyrakis, M. (2017) Calculating the explicit probability of entrainment based on inertial acceleration measurements. Journal of Hydraulic Engineering, 143(4), 04016097. (doi:10.1061/(ASCE)HY.1943-7900.0001262)

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Abstract

A new method for the approximation of the explicit probability of entrainment for individual coarse particles is presented. The method is based on the derivation of inertial acceleration measurements, space-state approximation of the dynamics close to entrainment, and the probabilistic approximation of the threshold inertial acceleration that causes incipient motion. Results from flume experiments with a custom-made inertial measurement unit enclosed in an idealized spherical enclosure, under varied flow conditions (achieved through slope change) and two different arrangements (saddle and grain-top positions) are presented to demonstrate the application of the method. The analysis supports the modification of the existing flow velocity–based entrainment criteria so they respect the particle-frame realization of forces during incipient motion.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hoey, Professor Trevor and Hodge, Dr Rebecca and Drysdale, Dr Timothy and Sventek, Professor Joseph and Valyrakis, Dr Manousos and Maniatis, Mr Georgios
Authors: Maniatis, G., Hoey, T. B., Hassan, M. A., Sventek, J., Hodge, R., Drysdale, T., and Valyrakis, M.
College/School:College of Science and Engineering > School of Computing Science
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
College of Science and Engineering > School of Engineering > Infrastructure and Environment
College of Science and Engineering > School of Geographical and Earth Sciences
Journal Name:Journal of Hydraulic Engineering
Publisher:American Society of Civil Engineers
ISSN:0733-9429
ISSN (Online):1943-7900
Published Online:04 November 2016
Copyright Holders:Copyright © 2016 American Society of Civil Engineers
First Published:First published in Journal of Hydraulic Engineering 143(4): 04016097
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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