Impact of Electro-Magnetics and Ionization on Mixing and Combustion in Scramjet Combustors
Preliminary numerical studies have been conducted to assess the possible potential for enhancing fuel/air mixing and combustion in high-speed combustors through the generation and utilization of body-forces in and adjacent to fuel injection. Specifically, the model utilized here assumes localized electrostatic-type force fields and approximate force interactions associated with flush-wall hydrogen fuel injection in supersonic combustors. Results in this work indicate significant increases in mixing and combustion may be possible with relatively localized and weak force-fields and force interactions, resulting in large decreases in required combustor length for achieving adequate levels of mixing. Irreversibility associated with the modification to the flow-field is shown to be (potentially) approximately the same as the base-line case (no flow-field modification). Extrapolation of these results to engine-level performance estimations in terms of potential for generating engine thrust indicates significant possible gains in terms of increased specific impulse and increased specific thrust.
T. M. Taylor and D. W. Riggins, "Impact of Electro-Magnetics and Ionization on Mixing and Combustion in Scramjet Combustors," 42nd AIAA Aerospace Sciences Meeting and Exhibit 2004, American Institute of Aeronautics and Astronautics (AIAA), Jan 2004.
Mechanical and Aerospace Engineering
Langley Research Center
Keywords and Phrases
Fuel Injection; Fuel/Air Mixing; Combustion
Article - Conference proceedings
© 2004 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.