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Turbulence and bed shear stress in shallow open channel flows over rough permeable beds

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  • Full or part time
    Prof Pokrajac
    Prof Nikora
  • Application Deadline
    Applications accepted all year round

Project Description

Knowledge of open-channel flow is crucial to river engineers. Design of flood protection systems and flood management rely on the ability of simulation models to accurately predict turbulence and bed shear stress in open channel flows. State-of-the art numerical models satisfy this requirement very well for deep flows (with flow depth much larger than roughness height) over impermeable beds. However, for shallow flows (with depth comparable to roughness height) over permeable beds both turbulence and bed shear stress modelling need to be revisited and modified to account for the effect of depth-bounded boundary layer and bed permeability. Many natural streams are shallow and flow over permeable gravel layers, so it is important to address this knowledge gap.

This project aims to improve knowledge and understanding of shallow open channel flows over permeable beds by producing an extensive experimental data set which will be used to establish turbulence closure relationships as well as the relationship between the bed shear stress and the mean velocity suitable for use for shallow open channel flows over permeable beds.

The successful applicant will have a first or upper second class degree (or equivalent) in Civil Engineering or Physics along with knowledge in Fluid Mechanics.

Funding Notes

There is no funding attached to this project, it is for self-funded students only.

References

Application Procedure

Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for PhD in Engineering, to ensure that your application is passed to the correct College for processing. Please ensure that you quote the project title and supervisor on the application form. Informal enquiries can be made to, Dr Dubravka Pokrajac, University of Aberdeen with a copy of your current CV and a covering letter detailing your suitability for the project. Email: [email protected]). All general enquiries should be directed to the Graduate School Admissions Unit ([email protected]).

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