Numerical study of combustion characteristics for stoichiometric hydrogen-air mixture in rotating detonation engine (RDE)

Due to the higher efficiency of the detonation wave compared to the deflagration wave, in recent years, attention has been attracted to the use of detonation waves in engines. For this purpose, various engines such as pulse detonation engines and rotating detonation engines are proposed. Because of the better performance of rotating detonation engines, the purpose of this work is investigation of detonation propagation wave inside the rotating detonation engine (RDE) chamber numerically and with a three-dimensional approach. The purpose of the present work is investigation of the propagation of the detonation wave inside the rotating detonation engine (RDE) which has been done numerically by considering three-dimensional approach. For this purpose, Navier-Stokes equations is solved with taking into account energy and species conservation equation for the reacting flow. Because of high computational cost, a one-step global chemical reaction is used. The results of the present study are compared with the results of the Chapman-Jouguet detonation wave. The results show that there is a good agreement between the temperature and wave velocity. Also, according to the simulation results, the structure of the detonation wave was well extracted. After creating the initial condition, the detonation wave is created and starts moving at a certain speed. In the following, the performance parameters of the present chamber are examined in order to be used in turbine engines, which shows the remarkable performance of this type of chambers.