Modeling of the Turbulent Combustion in Solid-fuel Ramjet

An in-house multi-physics coupling code has been developed to solve the 3-D Navier-Stokes equations with chemical reaction to predict the unsteady turbulent combustion in solid-fuel ramjet. Firstly, the governing equations, chemical reaction models and numerical methods are illustrated in detail. Then the flow field of solid-fuel ramjet is analyzed. The results show that fuel-rich region exists near the fuel surface and oxygen-rich region exists near the central axis. Finally, the calculated regression rate is compared with those obtained with connected-pipe test. The good agreement demonstrates the predictive capability of the developed code.