Professor of College of Science, Head of Center for Computational Fluid Dynamics. Uses supercomputers to model and simulate complex natural and man-made phenomena. He simulated several well-known explosion incidents, among them the World Trade Center bombing, the attack on American Embassy in Nairobi and the Challenger Space Shuttle accident. His codes have been used by the car industry to reduce wind noise, and by the Navy to compute the flowfields in the wake regions of ships to train safe helicopter landings. His simulations of the flow of blood through arteries in the brain have helped to improve the understanding and treatment of aneurysms. Active areas of research include fluid-structure interaction, optimal shape and process design, the use of graphics cards within field solvers, compressible and incompressible flow solvers, thermal, control and dispersion solvers, as well as pedestrian flow simulators. Strategic areas of the CFD team include: blast-structure interaction, free surface hydrodynamics, contaminant transport, haemodynamics (bloodflow), optimal shape and process design, and pedestrian flow/computational crowd dynamics.