http://www.nas.nasa.gov/home.html
The home page of the Numerical Aerodynamic Simulation Systems Division (NAS) offers access to resources related to the research in computer-simulated aerodynamics. The goal of the NAS is to provide the aerospace research community with a high-performance supercomputing environment capable of simulating all aspects of an aerospace vehicle system. Users can access technical reports, data sets, software, and other resources the NAS has made available to the scientific community.