New theoretical constructs for large eddy simulation (LES) sub-grid scale models allowing modeling shockturbulence-chemistry interactions in rotating detonation engines

This project aims to propose new theoretical constructs for large eddy simulation (LES) sub-grid scale (SGS) models, which allow modeling shock-turbulence-chemistry interactions, accounting for deflagration-to-detonation transition (DDT) processes, and which are applicable in numerical simulations of rotating detonation engines. It is worth noticing here that existing models are currently based on incomplete descriptions of physics at the microscale that typically results in an under resolved simulation. Therefore, the advancements proposed here address this scientific knowledge gap by providing accurate theoretical constructs to conduct fundamental research on compressible reacting flows including denotation waves. After proposed, the referred new theoretical constructs will be used to study physical processes in canonical flow configurations related to pressure-gain combustion systems and rotating detonation engines. Once the basic science questions are addressed, the possible application areas targeted with this project include rotorcraft and scramjets/ramjets for hypersonic propulsion, as well as aircraft and marine gas turbine-based engines. As such, it is expected that the outcomes from this project are utilized to design and use next generation, more compact, and efficient power plants. It should be noticed that the requested project funding will be used to cover expenses for personnel, computer equipment, travels and registration fees for international conferences, and student travels to US to collaborate with the ARL Open Campus program. Finally, this project will be developed in close cooperation with Dr. Luis Bravo and his team at the ARL Vehicle Power and Propulsion Branch.