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Effects of Turbulence on NOx Emissions from Lean Perfectly-Premixed Combustion

AlAdawy, Ahmed S
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406808796

Abstract Details

2014, PhD, University of Cincinnati, Engineering and Applied Science: Aerospace Engineering.
Effect of turbulence on NOx emissions is studied for a perfectly-premixed combustor running on methane/air at the mixture inlet temperature of 495 K and the combustor pressure of 5 atm over a range of equivalence ratios (0.54 - 0.85). Turbulence level is varied by a factor of 2-3 by changing the length of a portion of channels in a perforated plate on which the flame is stabilized. Simultaneous PIV and OH-PLIF measurements are used to calculate the relevant turbulence parameters such as turbulence intensity and turbulence mixing time scales, and define the flame structure such as average flame height and hence flame zone residence time scales, respectively. Effect of turbulence level is found to have negligible effect on NOx emissions level. NOx emissions are predicted by using a partially-stirred reactor (PaSR) model in CHEMKIN-PRO package with the measured turbulence parameters as the input. The modeling results agree very well with the measured NOx emission level but show that it slightly increases with the increase of turbulence level.
Jongguen Lee, Ph.D. (Committee Chair)
Ahmed M ElKady, Ph.D. (Committee Member)
Bassam Sabry Mohammad Abdelnabi, Ph.D. (Committee Member)
Shaaban Abdallah, Ph.D. (Committee Member)
San-Mou Jeng, Ph.D. (Committee Member)
139 p.
Aerospace Materials
turbulence; NOx; premixed combustion; Partially-Stirred Reactor; PIV; PLIF

Recommended Citations

Citations

  • AlAdawy, A. S. (2014). Effects of Turbulence on NOx Emissions from Lean Perfectly-Premixed Combustion [Doctoral dissertation, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406808796

    APA Style (7th edition)

  • AlAdawy, Ahmed. Effects of Turbulence on NOx Emissions from Lean Perfectly-Premixed Combustion. 2014. University of Cincinnati, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406808796.

    MLA Style (8th edition)

  • AlAdawy, Ahmed. "Effects of Turbulence on NOx Emissions from Lean Perfectly-Premixed Combustion." Doctoral dissertation, University of Cincinnati, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406808796

    Chicago Manual of Style (17th edition)

ucin1406808796
1,506
© 2014, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.