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Computational Fluid Dynamics (CFD) are a core aspect of research into Rotating Detonation Engines (RDEs). However, barriers to entry to conduct RDE CFD simulations, such as pay-walled and closed-source solvers hinder the ability of researchers to recreate, validate and build on past work in the RDE research field. As such, we test an open-source alternative solver, RYrhoCentralFoam, a multi-phase, multi-component, compressible and reacting flow OpenFOAM solver developed by the National University of Singapore’s Computational Combustion and Energy Group. We validate and test the solver by simulating a hydrogen-air small annular RDE across a range of mass flow rates. Using this solver, we were able to achieve rotating detonation in a simulated small RDE, at mass flow rates ≥40 g/s with stoichiometric mixtures. The detonation velocity was within 90-94% of the Chapman–Jouguet detonation velocity, this being higher than the typical 60-80% range for annular RDEs. This is due to the inviscid flow conditions assumed in the RDE chosen to limit the computational cost of the simulation.
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Hann et al. (Thu,) studied this question.
www.synapsesocial.com/papers/68e6dc0eb6db643587657b2f — DOI: https://doi.org/10.62512/conf.ukacm2024.037
Reuben Hann
Enric Grustan‐Gutierrez
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