3D numerical modeling of a cylindrical RDE with an inner body extending out of the nozzle

Abstract

The emerging new generation of RAM engines – rotating detonation engines – placed the problem of numerical forecasts of its effectiveness and reliability on top of current research needs. The paper presents the results of 3D numerical modeling of an engine with a rotating detonation wave (RDE) fed with hydrogen-oxygen mixture. An engine using rotating detonation waves is a new approach to increase of thrust characteristics of power facilities. The research studied the influence of a combustion chamber shape parameters on the RDE performance. Different internal body lengths were considered; the internal body was a cylinder with a conic top. The body could extend out of the nozzle of the engine. A 3 cases were studied: 1) the inner body length 6 cm, 2) 9 cm, 3) 9.75 cm. Besides, the chamber channel could hold inclusions: rings partially blocking it, near the inflow end of the combustion chamber. The influence of those rings was also studied. Stable modes of rotating detonation were obtained with one, or two waves. For all the cases, thrust characteristics were obtained and analyzed.