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Calculating the explicit probability of entrainment based on inertial acceleration measurements.

Maniatis, G. and Hoey, T.B. and Hassan, M.A. and Sventek, J. and Hodge, R.A. and Drysdale, T. and Valyrakis, M. (2017) 'Calculating the explicit probability of entrainment based on inertial acceleration measurements.', Journal of hydraulic engineering., 143 (4). 04016097.


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:Article
Full text:(AM) Accepted Manuscript
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Date accepted:18 August 2016
Date deposited:12 October 2016
Date of first online publication:04 November 2016
Date first made open access:No date available

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