Numerical Investigation of Air Vitiation Effect on the Rotating Detonation Engine

Numerical investigation of air vitiation with H2O effect on the operation process and performance of the rotating detonation engine have been performed in this paper. The high-resolution upwind scheme and the detailed reaction kinetics model were employed to solve the chemical non-equilibrium Euler equations. The effect of air vitiation with H2O on the operation process and performance of the rotating detonation engine were discussed in detail. The present numerical study shows that the temperature of detonation product has a large difference in three cases as well as the peak temperature on the outer wall. The content of H2O vitiation in air is higher, and the peak temperature of detonation product is lower. For the three cases, the peak pressure on the outer wall is nearly twice as much as that on the inner wall, and the content of H2O vitiation in air is higher, the peak pressure of detonation product is lower. With the increase of H2O vitiation content in air, the combustion efficiency, thrust and specific impulse greatly are decreased. The results of this paper can provide reference data for the research on the rotating detonation engine.