SCIENCE AT THE EDGE SEMINAR Friday, October 18, 2002 11:30 a.m., Room 1400 Biomedical and Physical Sciences Building Refreshments served in 1400A at 11:15 a.m. Title: Matchsticks, Scramjets, and Black Holes: Numerical Simulation Faces Reality Speaker: Elaine S. Oran Laboratory for Computational Physics and Fluid Dynamics Naval Research Laboratory Abstract: The evolution of the science and art of numerical simulation of complex, complicated fluid flows has made enormous strides in the past forty years. We have progressed from relatively simplified one-dimensional steady-state results to fully three-dimensional, time-dependent simulations including very complex physics. These advances have been driven by new computational hardware, new algorithms for solving the equations, and the real need for this technology. This presentation emphasizes the broad range of applications that are possible, and describes some of what we can now do, what we have learned, and where we might go with this exciting technology in the future.