Publication details for Dr Rebecca HodgeManiatis, G., Hoey, T.B., Hassan, M.A., Sventek, J., Hodge, R.A., Drysdale, T. & Valyrakis, M. (2017). Calculating the explicit probability of entrainment based on inertial acceleration measurements. Journal of Hydraulic Engineering 143(4): 04016097.
- Publication type: Journal Article
- ISSN/ISBN: 0733-9429, 1943-7900
- DOI: 10.1061/(asce)hy.1943-7900.0001262
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
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.