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Calculating the explicit probability of entrainment based on inertial acceleration measurements

Maniatis, G.; Hoey, T.B.; Hassan, M.A.; Sventek, J.; Hodge, R.A.; Drysdale, T.; Valyrakis, M.

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Authors

G. Maniatis

T.B. Hoey

M.A. Hassan

J. Sventek

T. Drysdale

M. Valyrakis



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.

Citation

Maniatis, G., Hoey, T., Hassan, M., Sventek, J., Hodge, R., Drysdale, T., & Valyrakis, M. (2017). Calculating the explicit probability of entrainment based on inertial acceleration measurements. Journal of Hydraulic Engineering, 143(4), Article 04016097. https://doi.org/10.1061/%28asce%29hy.1943-7900.0001262

Journal Article Type Article
Acceptance Date Aug 18, 2016
Online Publication Date Nov 4, 2016
Publication Date Apr 1, 2017
Deposit Date Oct 11, 2016
Publicly Available Date Mar 29, 2024
Journal Journal of hydraulic engineering
Print ISSN 0733-9429
Electronic ISSN 1943-7900
Publisher American Society of Civil Engineers
Peer Reviewed Peer Reviewed
Volume 143
Issue 4
Article Number 04016097
DOI https://doi.org/10.1061/%28asce%29hy.1943-7900.0001262

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