Pulsed Detonation Combustor in a Supersonic Cross-Flow for Enhanced Mixing and Ignition

Timothy Ombrello, Campbell Carter, Jonathan McCall, Christopher Rajnicek, Frederick Schauer, Chung-jen Tam, Andrew Naples, John Hoke, Kuangyu Hsu
2011 41st AIAA Fluid Dynamics Conference and Exhibit   unpublished
An investigation of a pulse detonation combustor applied to a supersonic flow for enhanced mixing was performed both experimentally and numerically. Characterization of the high-pressure and high-temperature plume of the pulse detonation combustor through high-speed shadowgraphy showed significant penetration into the core of the M=2 flow with blow-down times greater than 4 ms. The momentary blockage from the PDC elevated the downstream pressures to between 1.5 and 2 times the static tunnel
more » ... sure for several milliseconds. Planar laser induced fluorescence measurements of NO captured the spanwise structure of the plume and the large counter-rotating vortex structure. Injection upstream of the pulse detonation combustor showed enhanced mixing and indicated that there was an optimal separation distance between the upstream jet and PDC for maximum penetration and mixing with the core supersonic flow.
doi:10.2514/6.2011-3713 fatcat:257icwdx3ff53ajdcjoo377nwa