Reactive Jet Interactions with Multifidelity Turbulence and Tailored Finite-Rate Combustion Modeling

To advance simulation techniques, such as high-fidelity computational fluid dynamics (CFD), to accelerate maturation of DACS design through design-time trade studies, there is a need for new, test-validated models that improve both computational performance and the accuracy of the reacting jet in hypersonic crossflow simulations. ATA and CUBRC (a research institution with leading expertise in aerothermal testing) propose to leverage decades of high-fidelity multiphysics modeling and flight-relevant hypersonic testing to create a test-validated, high-fidelity jet interaction CFD model. The chemical kinetic models used in these simulations will be created using ATACK, ATA’s mechanism reduction tool that enables detailed mechanisms to be reduced to CFD-appropriate sizes using application-specific physics. ATA will create mechanisms for inclusion of flight- and test-relevant fuels. In preparation for Phase II validation tests, CUBRC will develop a comprehensive test and diagnostic plan for specific fuels, performing benchtop experiments to quantify and mitigate technical risk. As part of a Multiphysics Engine, the simulation tools developed in this project will be able to be seamlessly coupled with other high-fidelity solvers, including thermal/ablation, structural, signature prediction, and (as a part of the proposed Phase II effort) aero-optic solvers. Approved for Public Release | 22-MDA-11339 (13 Dec 22)