Numerical Investigation of Contact Burning in an Air-Breathing Continuous Rotating Detonation Engine

Three-dimensional (3D) numerical simulations of a continuous rotating detonation engine are carried out with an unsteady Reynolds-averaged Navier-Stokes solver. The second-order upwind advection upstream splitting method and second-order Runge-Kutta method are used to discretize space and time terms...

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Bibliographic Details
Published in:International journal of aerospace engineering 2022-03, Vol.2022, p.1-13
Main Authors: Xiong, Dapeng, Sun, Mingbo, Peng, Haoyang, Wang, Yanan, Yang, Yixin, Wang, Hongbo, Yu, Jiangfei, Wang, Zhenguo
Format: Article
Language:English
Subjects:
Aerospace engineering
Chemical reactions
Combustion chambers
Detonation waves
Efficiency
Enthalpy
Heat
Investigations
Numerical analysis
Propagation
Propagation velocity
Reynolds averaged Navier-Stokes method
Rotation
Runge-Kutta method
Simulation
Velocity
Viscosity
Wave propagation
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Summary:Three-dimensional (3D) numerical simulations of a continuous rotating detonation engine are carried out with an unsteady Reynolds-averaged Navier-Stokes solver. The second-order upwind advection upstream splitting method and second-order Runge-Kutta method are used to discretize space and time terms, and detailed 9-species 19-step hydrogen-oxygen reactions are applied in this study. Nonpremixed rotating detonation is successfully realized numerically, and the characteristics of the detonation wave are revealed. The expanding angle of the combustor has a great impact on the shape of the detonation wave but has little influence on the propagation velocity. The evolution of combustion on the contact region is analyzed in detail; a more accurate schematic of non-premixed air-breathing rotating detonation engines is given in this paper. A rough analysis of the heat performance of the contact region shows that the heat release of the contact region is approximately one-third of the total heat release and the configurations of the combustors do not affect the proportion.
ISSN:1687-5966
1687-5974
DOI:10.1155/2022/1487613