Advanced Computational Simulations Tool for Missile Plumes Transient Events Prediction

This proposal offers an innovative and efficient computational simulation tool for the prediction of missile plume transient events and associated missile unsteady flow fields. The proposed solution will enable simulating the complete range of flowfieldtransient effects resulting from time-dependent flow boundary conditions, prescribed body and thrust vector motion, and up to performing a complete multi-body 6-DoF simulation of missile staging transients. The proposed approach utilizes an existinghigh-fidelity multi-body computational system as the framework for the missile plume transient events simulation tool. Proposed developments include a high-order grid adaptation multi-resolution wavelet compression method for efficient local flowresolution, implementation of state-of-the-art turbulence modeling capabilities, implementation of efficient and accurate gas/particulate model based on Probability Density Function Propagation, and efficient parallel processing.In Phase I, the proposed tools will be demonstrated for missile staging plume effects and the wavelet compression solution refinement and adaptation methodology will be developed. Plans for turbulence modeling improvements and gas/particulate developmentwill be developed for implementation in Phase II. The Phase II program will focus on the development, validation and demonstration of the computational simulation environment for efficient and accurate missile plume transient events prediction. The transient plume flowfield prediction models have applications across all DoD and many commercial programs requiring plume modeling of transient events. Other applications include store separation and ammunition dispensing, explosion modeling,chemical and biological agent dispersion prediction, ship deck exhaust plume interference. These technologies will be incorporated into the CFD-FASTRAN commercial flow solver and will be available for a large number of existing users in many governmentorganizations and private enterprises.