摘要: This paper presents results of a simulation for a centerbody-less rotating detonation combustor (RDC) rig from University of Cincinnati. The non-premixed hollow RDC simulation showed a stable detonation running an ethylene/air mix... 展开 This paper presents results of a simulation for a centerbody-less rotating detonation combustor (RDC) rig from University of Cincinnati. The non-premixed hollow RDC simulation showed a stable detonation running an ethylene/air mixture with a mass-flow rate of 0.647 kg/s and an equivalence ratio of 1.12. Fuel injection was through discrete axial injectors with a radially inward air slot injection. The injection pattern produced two recirculation zones, a small one near the injectors on the outside wall, and a second recirculation zone further into the fill region. Three regions of heat-release related to the detonation wave were identified: the upper portion of the detonation wave, which was the strongest with heat release extending slightly into the interior of the domain, a region that hugged the wall and showed a somewhat corrugated presentation on the outer wall due to the discrete fuel injection, and a third region near the injectors that lagged the other two. The presence of strong heat-release lagging the main detonation wave resulted in an additional reflected shock wave running parallel to the oblique shock wave from the top of the detonation, which was consistent with earlier simulations using an ideal injection model. This solution demonstrated the potential of simulations to help understand the dynamics underlying hollow RDCs. 收起