My area of research comprises the study of transport processes in fluids, generally involving wall-bounded turbulence and buoyancy effects. Application areas are transport processes in urban areas (urban heat island, dispersion, microclimate), atmospheric convection, building ventilation (stratified environments, plumes/jets, exchange flows), water quality in distribution systems (mass transfer), groundwater flows and oceanography.
I use a wide range of simulation techniques, ranging from Direct Numerical Simulation (DNS), Large-Eddy Simulation (LES) to Reynolds-Averaged Navier-Stokes (RANS) simulation and custom-made (e.g. pseudospectral, finite-difference) codes. All the production codes are fully parallised, with the biggest simulations with the DNS code running at resolutions in excess of 10 billion points with over 250,000 cores simultaneously on Europe's largest supercomputers. My students occasionally use commercial and open-source CDF packages such as ANSYS Fluent and OpenFOAM.
I often derive analytical solutions and develop conceptual modes that capture the dominant flow physics. Indeed, the main output for the projects on turbulent entrainment and turbulent mass transfer are the parameterisations, that can be built into atmospheric/oceanic models and/or can be used for engineering computations.
There are regular opportunities for PhD and Post-doctoral positions in my group so contact me in case you are interested.
Harm Jonker, Delft University of Technology
Alex Liberzon, Tel Aviv University
Kemo Hanjalic, Delft University of Technology
Gary Hunt, Cambridge University, 2010
Markus Holzner, ETH Zurich
Research Student Supervision
Auwerter,L, Durability of superhydrophobic surfaces for the water industry
Jordan,O, Turbulent entrainment in stratified boundary layers
Grylls,T, Simulation of pollutant dispersion in urban areas
Suter,I, LES of microclimates in urban areas
Alpresa Gutierrez,P, Determination of shear-stresses in blood-flow and their relevance to the development of arterial disease
Kasiman,E, Numerical simulation of non-potential-flow wave-diffraction around surface-piercing structures