Advanced Read-Out Integrated Circuit for Quantum wel Infrared Photodetector Array

Not Available This proposal addresses the need for a fast running, multi-purpose fire simulation computer code for Weapon System Safety Assessments (WSSAs), with direct applicability to the evaluation of threats to/from weapons of mass destruction (WMD). This proposal would extend the Isis-2D fire code to 3-dimensions while maintaining its fast running attributes essential to practical risk analysis. The proposed effort would also extend the code's existing flexibility to address issues related to hazards associated with WMD. In its present form as a 2-dimensional code, Isis-2D has limitation relative to accurately representing complex real world problems. Due to (a) the highly 3-dimensional nature of fires, (b) the 3-dimensional complexity of real world environments, and (c) the 3-dimensional interactions between the fires and the real world, the evaluation of real world fires requires a 3-dimensional mechanistic code. In addition, to support the scoping nature and thus the requirement for large number of risk-compatible evaluation, Isis also satisfies the necessary requirement of flexible modeling attributes and fast computational run times. The results from this research have several anticipated benefits to DTRA. First, a fast-running, 3-dimensional fire model would help reduce uncertainties and reliance on engineering judgment. Second, we have identified many conditions or phenomena where a 3-dimensional tool would provide a defensible method to reduce requirements for conservatism. The ultimate objective is to reduce the likelihood of needless recommendations for costly procedure or hardware changes. Finally, completion of such a tool will allow, with little additional effort, a general-purpose code for the analysis of fire challenges and subsequent behavior (e.g., transport, decomposition, inhalation, and deposition) of biological and chemical agents in weapons of mass destruction.