Numerical study to evaluate soot formation in a jp combustor equipped to different types of swirler

Darbandi, M ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.2514/6.2019-4055
  3. Publisher: American Institute of Aeronautics and Astronautics Inc, AIAA , 2019
  4. Abstract:
  5. This paper is concentrated on soot formation in a JP combustor and it studies the emission in its exhaust gases when the combustor is equipped with different types of exhaust swirler. So, to approve the developed solver, it is required to predict one related flame structure accurately right at the first step. In this regard, we solve a well-documented benchmark test case with available data from experiment. These data are then compared with the current numerical results to evaluate the discrepancies. The comparison indicates that there is good agreement between them. Afterwards, we equip a similar combustor with different types of swirler, simulate the new designed combustor configurations, and compare the achieved numerical results with those of benchmark test cases. The comparisons are provided in a manner to show the effects of each swirler separately. In these simulations, the swirlers are designed for both the incoming air and the incoming fuel separately. There is no need to mention that these swirlers suitably change the directions of incoming air and fuel streams, which eventually results in non-zero tangential velocity components. Our simulations show that the fuel swirler would reduce the soot formation inside the combustor and consequently the soot emission in the exhaust gases. Alternatively, the air swirler does not necessarily result in such effects. The outcome of this study is very helpful for designers who investigate the emission of pollutants from jet combustors. © 2019 by American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved
  6. Keywords:
  7. Air ; Benchmarking ; Combustors ; Fuels ; Propulsion ; Soot ; Benchmark tests ; Flame structure ; Fuel stream ; Numerical results ; Soot emissions ; Soot formations ; Swirlers ; Tangential velocity component ; Exhaust gases
  8. Source: AIAA Propulsion and Energy Forum and Exposition, 2019, 19 August 2019 through 22 August 2019 ; 2019 ; 9781624105906 (ISBN)
  9. URL: https://arc.aiaa.org/doi/abs/10.2514/6.2019-4055