Agent Aerosol Dynamics and Computational Fluid Dynamics of Complex Three Dimensional Multi-Phase Flowfields

Toxic Hazard Prediction is about aerosols--their release, containment, modification by explosives and fire, venting, transport, neutralizatization, scavenging, rainout, washout, resuspension and pathways through the environment to man. Aerosol properties change with time and circumstance, and rarely are conditions similar; deposition can vary over a wide range. No general aerosol model derived for normal clouds reproduces without serious approximation the particle growth and chemical properties of wartime aerosols. A new capability is needed. The balances regulating deposition can be shaped by agent release at hypersonic velocities, high-energy thermodynamics, photochemistry, multispecie dynamics, and interaction with weather systems. A wide range of environments. After deposition, microphysics properties such as particle size, chemical composition, solubility, and potential for ion exchange determine how quickly the toxic moves through ground and water systems to man. We will calculate those properties. We propose to develop a first-principle family of codes that give high-fidelity assessments of BW/CW effects. A key and unique capability in the family of codes we will design in Phase I and develop in Phase II is an advanced aerosol model based on theoretical and numerical developments for wartime aerosols. The first-principle codes we develop assess CBW weapon use, casualties and ecosystem (collateral) impacts from attack on CW/BW manufacture/storage, agent neutralization and aerosol warhead enhancement. Commercial applications include accident management, permit process assessments, and design of new waste incineratos that minimize toxic/heavy metal emission.