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Development of a Premixed Combustion Capability for Dual-Mode Scramjet Experiments.
Rockwell, Robert D; Goyne, Christopher P; Chelliah, Harsha; McDaniel, James C; Rice, Brian E; Edwards, Jack R; Cantu, Luca M L; Gallo, Emanuela C A; Cutler, Andrew D; Danehy, Paul M.
Afiliação
  • Rockwell RD; Senior Scientist, Mechanical and Aerospace Engineering, Member AIAA. University of Virginia, Charlottesville, Virginia 22904.
  • Goyne CP; Associate Professor, Mechanical and Aerospace Engineering, Associate Fellow AIAA. University of Virginia, Charlottesville, Virginia 22904.
  • Chelliah H; Professor, Mechanical and Aerospace Engineering, Associate Fellow AIAA. University of Virginia, Charlottesville, Virginia 22904.
  • McDaniel JC; Professor, Mechanical and Aerospace Engineering, Associate Fellow AIAA. University of Virginia, Charlottesville, Virginia 22904.
  • Rice BE; Research Aerospace Engineer, High Speed Systems Division, Member AIAA. U.S. Air Force Research Laboratory, Arnold Air Force Base, Tennessee 37389.
  • Edwards JR; Professor, Mechanical and Aerospace Engineering, Associate Fellow AIAA. North Carolina State University, Raleigh, NC 27695.
  • Cantu LML; Ph.D. Candidate, Mechanical and Aerospace Engineering, Member AIAA, The George Washington University, Washington, DC 20052.
  • Gallo ECA; Ph.D. Candidate, Mechanical and Aerospace Engineering, Member AIAA, The George Washington University, Washington, DC 20052.
  • Cutler AD; Professor, Mechanical and Aerospace Engineering, Associate Fellow AIAA. The George Washington University, Washington, DC 20052.
  • Danehy PM; Research Scientist, Advanced Measurements and Data Systems Branch, Associate Fellow AIAA. NASA Langley Research Center, Hampton, VA 23681.
J Propuls Power ; 34(2): 438-448, 2018 Mar.
Article em En | MEDLINE | ID: mdl-33510552
Hypersonic air-breathing engines rely on scramjet combustion processes, which involve high-speed, compressible, and highly turbulent reacting flows. The combustion environment and the turbulent flames at the heart of these engines are difficult to simulate and study in the laboratory under well controlled conditions. Typically, wind-tunnel testing is performed that more closely approximates engine development rather than a careful investigation of the underlying physics that drives the combustion process. The experiments described in this paper, along with companion data sets, aim to isolate the chemical kinetic effects and turbulence-chemistry interaction from the fuel-air mixing process in a dual-mode scramjet combustion environment. A unique fuel injection approach is adopted that produces a uniform fuel-air mixture at the entrance to the combustor and results in premixed combustion. This approach relies on the mixing enhancement of a precombustion shock train upstream of the dual-mode scramjet's combustor. For the first time a stable flame, anchored on a cavity flameholder, is reported for a scramjet combustor operating in premixed fuel-air mode. The new experimental capability has enabled numerous companion studies involving advanced diagnostics such as coherent anti-Stokes Raman scattering (CARS), particle image velocimetry (PIV), and planar laser induced fluorescence (PLIF).

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Propuls Power Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Propuls Power Ano de publicação: 2018 Tipo de documento: Article