Modelling studies are focussing on dealing with the strong gradients that exist in combustion events.
Another project, conducted by Mahmoud Assad and supervised by Dr Prosser is looking at buoyant plumes as a precursor to non-premixed combustion, or fires. The objective here is to quantify the stress strain misalignment, and to use this information to construct a Reynolds stress like behaviour in a simple linear eddy viscosity models (EVM). The challenge is to capture the effects of strong density gradients as manifest through active scalar fluxes.
The mathematics of fractal offers some interesting opportunities. Dr Prosser and Dr Davey are examining heat transfer on fractal structures; dyadic cantor product spaces and Sierpinski gaskets. We are extending this work to include viscous flows through fractal cross sections. The work is motivated by porous flows through granular structures, and is the PhD project for Ms. Chulin Jiang.
One aspect being studied by Umair Ahmed and Dr Prosser is the role of strain eigenvector or scalar gradient misalignment in the scalar dissipation transport equation. Scalar dissipation is essentially what controls turbulent reaction rate, and its accurate representation is essential for reasonable combustion modelling.
Academic Staff: Dr Robert Prosser
Please contact one of the academic staff for further details of current research activity.