A model combustor for studying a reacting jet in an oscillating crossflow

摘要: This paper discusses a novel model combustion experiment that was built for studying the structure and dynamics of reacting jet in an unsteady crossflow. A natural-gas-fired dump combustor is used to generate sustain acoustically oscillating vitiated flow serves as crossflow transverse injection. Unlike most other techniques are limited operating pressure or acoustic amplitude, this method generating field demonstrated at 10 atm with peak-to-peak oscillation amplitudes approaching 20% mean pressure. An optically accessible test section designed these conditions provides access advanced laser optical diagnostic measurements. Detailed measurements provide insight into complex acoustic-hydrodynamic-combustion coupling processes offer high-quality, high-resolution validation data numerical simulations. Careful instrumentation port design considerations higher amplitude acoustics detailed. As whole, focuses on select representative segments operational space highlight our strategy providing oscillatory flowfield. includes presenting such amplitudes, frequencies, mode shapes. Select imaging results then reported support strategies capability produce high-fidelity