TY - GEN
T1 - Simulations of turbulent combustion for a jet-fueled cavity adjacent to a supersonic arc-heated flow
AU - Cisneros-Garibay, Esteban
AU - Buchta, David A.
AU - Freund, Jonathan B.
N1 - Publisher Copyright:
© 2020, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Numerical simulations are performed for mixing and ignition of a round ethylene jet injected into a cavity adjacent to a M = 3 oxidizer flow. For mixing, injector-placement effects are quantified by simulating two injection configurations: vertical from the floor near the cavity’s leading edge, and horizontal from the 45◦ ramp. Vertical injection produces a leaner cavity, which reduces ignition probability. Ignition is then seeded in the horizontal-injection configuration by modifying the local temperature field with a Gaussian hotspot as a reduced-cost approximation to laser-induced breakdown. Three seed locations are compared. Kernel dynamics are quantified through line-of-sight-integrated hydroxyl radical, and these are shown to be sensitive to seed placement.
AB - Numerical simulations are performed for mixing and ignition of a round ethylene jet injected into a cavity adjacent to a M = 3 oxidizer flow. For mixing, injector-placement effects are quantified by simulating two injection configurations: vertical from the floor near the cavity’s leading edge, and horizontal from the 45◦ ramp. Vertical injection produces a leaner cavity, which reduces ignition probability. Ignition is then seeded in the horizontal-injection configuration by modifying the local temperature field with a Gaussian hotspot as a reduced-cost approximation to laser-induced breakdown. Three seed locations are compared. Kernel dynamics are quantified through line-of-sight-integrated hydroxyl radical, and these are shown to be sensitive to seed placement.
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U2 - 10.2514/6.2020-1843
DO - 10.2514/6.2020-1843
M3 - Conference contribution
AN - SCOPUS:85092412025
SN - 9781624105951
T3 - AIAA Scitech 2020 Forum
BT - AIAA Scitech 2020 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Scitech Forum, 2020
Y2 - 6 January 2020 through 10 January 2020
ER -