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School of Civil Engineering, Surveying & Construct
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The Premier University of
African Scholarship |
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| Derek Stretch |
Fluid Dynamics |
| Personal Details |
Name: Professor Derek Stretch
Qualifications: BScEng MScEng(Cum Laude) PhD(Cantab)
Phone: +27-260 1064
Fax: +27-260 1411
Room: 215, Centenary Building
Email: stretchd@ukzn.ac.za
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| Research Interests |
| Environmental Fluid Dynamics |
Turbulence and mixing in natural flows such as in the atmosphere, rivers, estuaries, and ocean.
Recent research projects include :
- Odour dispersion from landfill sites
- Coastal water quality modelling
- Wind, wave and current interactions at the port entrance
- Turbulence structure and mixing at gas-liquid interfaces
- Near-shore sediment dynamics
- Structure & mixing efficiency of stably stratified turbulence
- Bio-hydrodynamics of estuaries
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| Projects |
| Odour Dispersion from Landfills |
Summary: |
Investigating odour trails from municipal solid waste landfilling operations. The Bisasar Rd landfill site was used as a case study for the development of a comprehensive odour management system. The system is based on real-time weather monitoring, advanced air dispersion modelling, and receptor feedback.
Graduate Student : Mr Guy Laister (graduated Cum Laude)
MSc Thesis (2002) : "Prediction, management, and control of odour from landfill sites"
Graduate Student : Mr Duncan Roebuck (graduated Cum Laude)
MSc Thesis (2005) : "Odour management at Landfills"
Funding : Durban Solid Waste |
| Wind, waves & cross-currents |
Summary: |
The effects of adverse weather conditions on shipping operations in the port entrance channel. Innovative digital imaging techniques were developed for tracking ships in the port entrance channel and for deducing the cross-currents that the ship experiences.
Graduate Student : Mr Sahil Patel
MSc Thesis (2002) : "Application of digital imaging in measuring cross track drift of vessels entering a port"
Funding : Department of Transport ; National Port Authority |
| Coastal water quality |
Summary: |
Investigating the effects of urban runoff on beach water quality. Development of simple models for predicting pathogenic pollution of the beaches. For more info and to check current beach pollution status, visit our coastal water quality web site
Graduate Student : Mr David Mardon (graduated Cum Laude)
MSc Thesis (2003) : "Coastal Water Quality"
Funding : National Innovation Fund (DEAT) | | Bio-Hydrodynamics of Estuaries |
Summary: | Hydrodynamics play a key role in determining the ecological functioning of estuaries. Our research aims to understand issues such as the effects of flow variations on mouth dynamics and the associated biological responses of the system. This can be applied to the sustainable management of estuaries.
Graduate Student : Ms Ingrid Zietsman
MSc Thesis (2004) : "Hydrodynamics of temporary open estuaries, with case studies of Mhlanga & Mdloti"
Funding : Water Research Commission
Graduate Student : Mr Michael Parkinson (graduated Cum Laude)
MSc Thesis (2007) : "The Breaching of Temporary Open/Closed Estuaries"
Funding : Joint WWF & MCM/NRF
Graduate Student : Ms Robynne Lawrie
MSc Thesis (2007) : "Modelling the water balance & nutrient dynamics of Mhlanga Estaury"
Funding : Joint WWF & MCM/NRF | | Transporting hazardous substances |
Summary: | Investigating the risks associated with the transportation of hazardous matarials, with particular regard to the road network. Quantifying the impacts of accidents that can result in releases of toxic or inflammable gases, using dispersion simulations coupled with general risk assessment modelling.
Graduate Student : Ms Deanne Everitt
MSc Thesis (2004) : "Risks associated with dangerous goods transport in SA"
Graduate Student : Mr Bhavesh Govan
MSc Thesis (2004) : "Risks of Transporting Dangerous Goods: South Durban Case Study"
Funding : Department of Transport | | Road Stormwater Quality |
Summary: | Investigating breaching of the sand barriers that form at the mouth of temporary open closed estuaries.
Graduate Student : Mr. C. Chrystal (graduated Cum Laude)
MSc Thesis (2007) : "Characterization of Stormwater Runoff from Road Surfaces"
Funding : Department of Transport (ECOTD) | | Biophysical interactions at St Lucia Estuary |
Summary: | Investigating the interactions between physico-chemical states and biological functioning at the St Lucia estuarine complex.
Graduate Student : Ms. Robynne Lawrie
PhD Thesis (2007 - ) : Current
Funding : WWF & Marine Coastal Management | | Inlet hydrodynamics & sediment transport at St Lucia estuary |
Summary: | Investigating the mouth and sediment dynamics at the St Lucia estuarine complex.
Graduate Student : Mr. Clint Chrystal
PhD Thesis (2007 - ) : Current
Funding : WWF & Marine Coastal Management | | Sea Level changes along the SA coast and the management implications |
Summary: | Investigating and quantifying sea level changes along the SA coastline and the development of shoreline response models.
Graduate Student : Mr. Andrew Mather
PhD Thesis (2007 - ) : Current
Funding : NRF & Durban Metro |
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