Fast and Accurate CBR Defense for Homeland Security: Bringing HPC to the First Responder and Warfighter

An urban-oriented emergency assessment system for airborne chemical, biological, and radiological (CBR) threats, called CT-Analyst^reg and based on new principles, gives greater accuracy and much greater speed than possible with current alternatives. The increased accuracy derives from detailed, three-dimensional (3D) computational fluid dynamics (CFD) computations including, solar heating, buoyancy, complete building geometry specification, trees, and wind fluctuations. A limited number of such detailed high performance computing (HPC) computations for a given area can be extended to all wind directions and speeds, and all likely sources and source locations using a new data structure called Dispersion Nomografstrade. By performing all the heavy computing ahead of time using the full power of HPC parallel platforms well suited to the application, the results of a number of complete, high-resolution 3D simulations can be recalled for operational usage with no sensible delay for integration of even simple models. In this way, we have solved the usual dilemma of more computer time being required to obtain better answers. The best available answers can be presented instantly with full urban geometry in a readily comprehended format.