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Inflation of ponded, particulate laden density currents (2018)
Journal Article
Dorrell, R. M., Patacci, M., & McCaffrey, W. D. (2018). Inflation of ponded, particulate laden density currents. Journal of Sedimentary Research, 88(11), 1276-1282. doi:10.2110/jsr.2018.65

Field-based, physical modeling and analytical research approaches currently suggest that topographically confined particle-laden density currents commonly inflate to produce suspension clouds that generate tabular and texturally homogeneous sedimenta... Read More

Optimisation of flow resistance and turbulent mixing over bed forms (2018)
Journal Article
Arfaie, A., Burns, A., Dorrell, R., Ingham, D., Eggenhuisen, J., & McCaffrey, W. (2018). Optimisation of flow resistance and turbulent mixing over bed forms. Environmental modelling & software : with environment data news, 107, 141-147. doi:10.1016/j.envsoft.2018.06.002

Previous work on the interplay between turbulent mixing and flow resistance for flows over periodic rib roughness elements is extended to consider the flow over idealized shapes representative of naturally occurring sedimentary bed forms. The primary... Read More

Scaling analysis of multipulsed turbidity current evolution with application to turbidite interpretation (2018)
Journal Article
Ho, V. L., Dorrell, R. M., Keevil, G. M., Burns, A. D., & McCaffrey, W. D. (2018). Scaling analysis of multipulsed turbidity current evolution with application to turbidite interpretation. Journal of geophysical research. C, Oceans, 123(5), 3668-3684. doi:10.1029/2017jc013463

Deposits of submarine turbidity currents, turbidites, commonly exhibit upward‐fining grain size profiles reflecting deposition under waning flow conditions. However, more complex grading patterns such as multiple cycles of inverse‐to‐normal grading a... Read More

A novel mixing mechanism in sinuous seafloor channels: Implications for submarine channel evolution (2017)
Journal Article
Dorrell, R. M., Peakall, J., Burns, C., & Keevil, G. M. (2018). A novel mixing mechanism in sinuous seafloor channels: Implications for submarine channel evolution. Geomorphology, 303, (1-12). doi:10.1016/j.geomorph.2017.11.008. ISSN 0169-555X

Previous experimental studies of density currents in sinuous seafloor channels have almost exclusively studied hydrodynamics either by considering time independent, instantaneous, flow measurements or by compiling time-averaged flow measurements. Her... Read More

Pulse propagation in turbidity currents (2017)
Journal Article
Ho, V. L., Dorrell, R. M., Keevil, G. M., Burns, A. D., & McCaffrey, W. D. (2018). Pulse propagation in turbidity currents. Sedimentology, 65(2), (620-637). doi:10.1111/sed.12397. ISSN 0037-0746

© 2017 The Authors. Sedimentology © 2017 International Association of Sedimentologists Submarine turbidity currents are a key mechanism in the transportation of clastic sediments to deep seas. Such currents may initiate with a complex longitudinal fl... Read More

A 3D forward stratigraphic model of fluvial meander-bend evolution for prediction of point-bar lithofacies architecture (2017)
Journal Article
Yan, N., Mountney, N. P., Colombera, L., & Dorrell, R. M. (2017). A 3D forward stratigraphic model of fluvial meander-bend evolution for prediction of point-bar lithofacies architecture. Computers & geosciences, 105, (65-80). doi:10.1016/j.cageo.2017.04.012. ISSN 0098-3004

© 2017 Elsevier Ltd Although fundamental types of fluvial meander-bend transformations – expansion, translation, rotation, and combinations thereof – are widely recognised, the relationship between the migratory behaviour of a meander bend, and its r... Read More

Flow dynamics and mixing processes in hydraulic jump arrays: Implications for channel-lobe transition zones (2016)
Journal Article
Dorrell, R., Peakall, J., Sumner, E. J., Darby, S. E., Özsoy, E., Tezcan, D., …Wynn, R. B. (2016). Flow dynamics and mixing processes in hydraulic jump arrays: Implications for channel-lobe transition zones. Marine Geology, 381, (181-193). doi:10.1016/j.margeo.2016.09.009. ISSN 0025-3227

© 2016 The Authors A detailed field investigation of a saline gravity current in the southwest Black Sea has enabled the first complete analysis of three-dimensional flow structure and dynamics of a series of linked hydraulic jumps in stratified, den... Read More

The inherent instability of leveed seafloor channels (2015)
Journal Article
Dorrell, R. M., Burns, A. D., & McCaffrey, W. D. (2015). The inherent instability of leveed seafloor channels. Geophysical research letters, 42(10), (4023-4031). doi:10.1002/2015GL063809. ISSN 0094-8276

©2015. American Geophysical Union. All Rights Reserved. New analytical models demonstrate that under aggradational flow conditions, seafloor channel-levee systems are inherently unstable; both channel area and stability necessarily decrease at long t... Read More

Optimised mixing and flow resistance during shear flow over a rib roughened boundary (2014)
Journal Article
Arfaie, A., Burns, A., Dorrell, R., Eggenhuisen, J., Ingham, D., & McCaffrey, W. (2014). Optimised mixing and flow resistance during shear flow over a rib roughened boundary. International communications in heat and mass transfer, 58, 54-62. doi:10.1016/j.icheatmasstransfer.2014.08.005

A series of numerical investigations has been performed to study the effect of lower boundary roughness on turbulent flow in a two-dimensional channel. The roughness spacing to height ratio, w/k, has been investigated over the range 0.12 to 402 by va... Read More

Hydrodynamics of fossil fishes (2014)
Journal Article
Fletcher, T., Altringham, J., Peakall, J., Wignall, P., & Dorrell, R. (2014). Hydrodynamics of fossil fishes. Proceedings. the Royal Society. Biological sciences /, 281(1788), 20140703-20140703. doi:10.1098/rspb.2014.0703

From their earliest origins, fishes have developed a suite of adaptations for locomotion in water, which determine performance and ultimately fitness. Even without data from behaviour, soft tissue and extant relatives, it is possible to infer a wealt... Read More

First direct measurements of hydraulic jumps in an active submarine density current (2013)
Journal Article
Sumner, E. J., Peakall, J., Parsons, D. R., Wynn, R. B., Darby, S. E., Dorrell, R. M., …White, D. (2013). First direct measurements of hydraulic jumps in an active submarine density current. Geophysical research letters, 40(22), (5904-5908). doi:10.1002/2013gl057862. ISSN 0094-8276

For almost half a century, it has been suspected that hydraulic jumps, which consist of a sudden decrease in downstream velocity and increase in flow thickness, are an important feature of submarine density currents such as turbidity currents and deb... Read More

Polydisperse suspensions: Erosion, deposition, and flow capacity (2013)
Journal Article
Dorrell, R. M., Hogg, A. J., & Pritchard, D. (2013). Polydisperse suspensions: Erosion, deposition, and flow capacity. Journal of geophysical research. JGR. Earth surface, 118(3), 1939-1955. doi:10.1002/jgrf.20129

Deposition from particle-laden flows is often described in terms of the capacity and competence of the flow, but robust definitions of these terms have proved elusive. In this paper we provide a mathematical modeling framework within which erosion an... Read More

Superelevation and overspill control secondary flow dynamics in submarine channels (2013)
Journal Article
Dorrell, R., Parsons, D., Darby, S., Peakall, J., Sumner, E., & Wynn, R. B. (2013). Superelevation and overspill control secondary flow dynamics in submarine channels. Journal of geophysical research. C, Oceans, 118(8), (3895-3915). ISSN 2169-9275

In subaerial and submarine meander bends, fluid flow travels downstream in a helical spiral, the structure of which is determined by centrifugal, hydrostatic, baroclinic, and Coriolis forces that together balance frictional stresses generated by the... Read More