the dynamics of explosive volcanic systems: both subsurface and atmospheric processes associated with such volcanism, and the related topic of two phase flow in pipelines
geothermal systems, especially superheated systems, in which there is continual water- vapour phase change, and fluid-mineral dissolution
natural ventilation flows in buildings, work which has recently led to the energy saving e-stack system, as well as new strategies for combining thermal mass with natural ventilation, to achieve both comfort and energy efficiency
models of traffic flow dynamics
oil-water-gas flows in porous rocks and problems asssociated with residual oil recovery
