The University of Sheffield
Department of Civil and Structural Engineering

Flow Patterns And Pollutant Retention In Vegetated Suds Ponds

Supervisor: Dr Virginia Stovin

Computational Fluid Dynamics (CFD) modelling tools enable engineers to visualise 3D flow patterns within complex structures and to represent the movement of sediments and/or dissolved materials within the flows. This approach has provided insights into, for example, sediment deposition within combined sewage storage chambers, gross solids separation in combined sewer overflows and the passage of intermittently-discharged solutes through pipes and manholes.
We are increasingly adopting more 'natural' approaches to surface water drainage (SuDS or Sustainable Drainage Systems), which includes the use of vegetated detention ponds. These ponds are believed to have very positive impacts on water quality, due to high retention times which facilitate sedimentation and nutrient removal. However, the retention times are affected by the pond's geometric configuration, and the role of vegetation is poorly understood. This project will focus on the development of robust CFD-modelling procedures to enable better design and analysis of SuDS ponds. Use will be made of new and/or existing field or laboratory data sets to validate the CFD work.

This project is NOT FUNDED, although Departmental/University scholarships are available for applicants who can demonstrate strong evidence of research potential.

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