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Blockage-ratio effect on aerosol behavior of soot nano-pm in a combustor burning jet propulsion fuel

Darbandi, M ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. Publisher: American Institute of Aeronautics and Astronautics Inc, AIAA , 2016
  3. Abstract:
  4. In this study, we numerically investigate the size effect of a bluff body, embedded inside a combustor, on the formation of carbonaceous nano-particulate matter (PM). The combustor is fed with a jet propulsion fuel. We first evaluate our extended numerical tool by simulating a turbulent kerosene/air nonpremixed flame in a combustor. The achieved results are then compared with those of experiment. The comparisons show that there are good agreements between them. Next, we embed an O-ring type flame holder inside the combustor to change its configuration, i.e., to extend it to a bluff-body burner. Assuming a constant air mass flow rate, we investigate the blockage ratio effects of the burner with changing the radius of bluff body. The achieved results with different bluff-body burner radii are compared with each other suitably. It is observed that the behavior of reactive nano-fluid flow inside the combustor would change the concentration and emission of soot nano-PM. It is shown that the emission of soot nano-PM reduces as the blockage ratio increases. © 2016, American Institute of Aeronautics and Astronautics Inc, AIAA
  5. Keywords:
  6. Aircraft propulsion ; Flow of fluids ; O rings ; Propulsion ; Soot ; Air mass flow rate ; Blockage ratio ; Bluff-body burner ; Jet propulsion ; Nano particulates ; Non-premixed flame ; Numerical tools ; Size effects ; Combustors
  7. Source: 46th AIAA Thermophysics Conference, 2016, 13 June 2016 through 17 June 2016 ; 2016 ; 9781624104350 (ISBN)
  8. URL: https://arc.aiaa.org/doi/abs/10.2514/6.2016-4423