The, statistically-Unsteady, Next Generation Sediment Transport model for ENvironmental flows

The coupled dynamics of internal waves and hairpin vortices in stratified plane Poiseuille flow (2022)
Journal Article
Lloyd, C., Dorrell, R., & Caulfield, C.-C. (2022). The coupled dynamics of internal waves and hairpin vortices in stratified plane Poiseuille flow. Journal of Fluid Mechanics, 934, Article A10. https://doi.org/10.1017/jfm.2021.1007

A simulation of stably stratified plane Poiseuille flow at a moderate Reynolds number (Formula Presented) and Richardson number (Formula Presented) is presented. For the first time, the dynamics in the channel core are shown to be described as a seri... Read More about The coupled dynamics of internal waves and hairpin vortices in stratified plane Poiseuille flow.

Equilibrium sediment transport by dilute turbidity currents: Comparison of competence-based and capacity-based models (2021)
Journal Article
Amy, L., & Dorrell, R. (in press). Equilibrium sediment transport by dilute turbidity currents: Comparison of competence-based and capacity-based models. Sedimentology, https://doi.org/10.1111/sed.12921

Equilibrium sediment transport is the condition of zero net entrainment and deposition by sediment-transporting flow (i.e. grade or regime). Here criteria for equilibrium sediment transport, or those used as proxies for equilibrium (for example, onse... Read More about Equilibrium sediment transport by dilute turbidity currents: Comparison of competence-based and capacity-based models.

Observations of large-scale coherent structures in gravity currents: implications for flow dynamics (2021)
Journal Article
Marshall, C. R., Dorrell, R. M., Keevil, G. M., Peakall, J., & Tobias, S. M. (2021). Observations of large-scale coherent structures in gravity currents: implications for flow dynamics. Experiments in Fluids, 62(6), Article 120. https://doi.org/10.1007/s00348-021-03217-4

Density driven flows, also known as gravity currents, comprise a head, body, and tail. Yet whilst the body typically forms the largest part of such flows, its structure remains poorly understood. In this work, experimental data gathered using particl... Read More about Observations of large-scale coherent structures in gravity currents: implications for flow dynamics.

Equilibrium sediment transport, grade and discharge for suspended-load-dominated flows on Earth, Mars and Titan (2020)
Journal Article
Amy, L., & Dorrell, R. (2021). Equilibrium sediment transport, grade and discharge for suspended-load-dominated flows on Earth, Mars and Titan. Icarus, 360, Article 114243. https://doi.org/10.1016/j.icarus.2020.114243

© 2020 The Authors Recent surface observations have emphasised the importance of bedload transport by rivers and streams on Mars and Titan. Previous “hydraulic” analysis, however, has also shown that transport as suspended load should be possible, if... Read More about Equilibrium sediment transport, grade and discharge for suspended-load-dominated flows on Earth, Mars and Titan.

Turbulence Processes within Turbidity Currents (2020)
Journal Article
Wells, M. G., & Dorrell, R. M. (2021). Turbulence Processes within Turbidity Currents. Annual Review of Fluid Mechanics, 53(1), 59-83. https://doi.org/10.1146/annurev-fluid-010719-060309

Sediment-laden gravity currents, or turbidity currents, are density-driven flows that transport vast quantities of particulate material across the floor of lakes and oceans. Turbidity currents are generated by slope failure or initiated when a sedime... Read More about Turbulence Processes within Turbidity Currents.