Simulations of turbulent combustion for a jet-fueled cavity adjacent to a supersonic arc-heated flow

Esteban Cisneros-Garibay, David A. Buchta, Jonathan B. Freund

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
DOIs
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF

Conference

ConferenceAIAA Scitech Forum, 2020
CountryUnited States
CityOrlando
Period1/6/201/10/20

ASJC Scopus subject areas

  • Aerospace Engineering

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