Skip to main content

Research Repository

Advanced Search

The coupled dynamics of internal waves and hairpin vortices in stratified plane Poiseuille flow (2022)
Journal Article
Lloyd, C., Dorrell, R., & Caulfield, 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.

Hydrodynamic efficiency in sharks: the combined role of riblets and denticles (2021)
Journal Article
Lloyd, C. J., Peakall, J., Burns, A., Keevil, G., Dorrell, R. M., Wignall, P., & Fletcher, T. (2021). Hydrodynamic efficiency in sharks: the combined role of riblets and denticles. Bioinspiration&biomimetics, 16(4), https://doi.org/10.1088/1748-3190/abf3b1

We investigate the influence of smooth and ribletted shark skin on a turbulent boundary layer flow. Through Laser Doppler Anemometry the role of riblets in combination with the shark skin denticle is established for the first time. Our results show t... Read More about Hydrodynamic efficiency in sharks: the combined role of riblets and denticles.

Numerical errors at walls: on the sensitivity of RANS models to near-wall cell size (2020)
Journal Article
Lloyd, C. J., Peakall, J., Burns, A. D., Keevil, G. M., & Dorrell, R. M. (in press). Numerical errors at walls: on the sensitivity of RANS models to near-wall cell size. International Journal of Computational Fluid Dynamics, 34(3), 204-225. https://doi.org/10.1080/10618562.2020.1732941

The sensitivity of a large range of turbulence closures to the near-wall grid resolution is assessed through analytical and numerical techniques. We determine model boundedness, limiting behaviour, and solution dependence of channel flow simulations... Read More about Numerical errors at walls: on the sensitivity of RANS models to near-wall cell size.