Quasi One Dimensional Modeling of Rotational Detonation Engines

摘要

Rotating detonation engines have received renewed interest in recent years and a number of groups around the world are pursuing developments for a variety of aerospace missions. The dynamic behavior of the injection system imposed by passage of one or multiple waves in the combustion chamber leads to complex combustion wave dynamics that are still defying understanding. Wave topology changes, slapping modes, and even alterations in wave direction have been observed experimentally. The objective of this study is to assemble a simple analysis tool for investigation of these phenomena and to ultimately inform on overall engine operabilty characteristics. The model employs a 1-D solution of the azimuthal wave dynamics with a global reaction mechanism coupled to lumped paramenter domains that dynamically feed the detonation region with reactants of varying stoichiometry. Model elements are described and some initial solutions are provided to demonstrate the characteristics of the newly-developed tool.