Gas turbine engine pollution

Mellor, A. M.

doi:10.1016/0360-1285(76)90023-x

Cited by 89 publications

(30 citation statements)

References 19 publications

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“…Increased utilization of fossil fuels has led to a rapid increase in the global levels of air pollution such as oxides of nitrogen (NO x ), sulfur (SO x ), carbon (CO x ), unburned and partially burned hydrocarbons (UHC), and particulate matter [1,2]. Air pollutants have detrimental effects on the environment and human health in a number of ways.…”

Section: Introductionmentioning

confidence: 99%

Numerical evaluation of NOx mechanisms in methane-air counterflow premixed flames

Cho

Chung

2009

J Mech Sci Technol

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The control of nitrogen oxides (NO x ) has been a major issue in designing combustion systems, since NO x play a key role in ozone depletion and the generation of photochemical smog. The characteristics of NO x emission can be essential information for the development of a clean combustor having suitable reduction methodologies. In the present study, NO x emission characteristics were evaluated numerically, accounting for the effect of equivalence ratio, stretch rate, pressure, and initial temperature. In general, peak NO x emission appeared near the equivalence ratio of unity case, and NO x emission increased with pressure and initial temperature due to the temperature sensitivity in NO x mechanism. NO x decreased with stretch rate due to the decrease in residence time in high temperature region. Furthermore, the thermal and prompt mechanisms were evaluated with equivalence ratio for two calculation methods. The conventional methods ignore the interaction of coupled mechanism of thermal and prompt NO x . The reaction path diagram was introduced to understand effective reaction pathways in various conditions.

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Section: Introductionmentioning

confidence: 99%

Numerical evaluation of NOx mechanisms in methane-air counterflow premixed flames

Cho

Chung

2009

J Mech Sci Technol

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“…Deviations at elevated jet momentum and equivalence ratios are attributed to extrapolating the empirical elements of the model or to impre~is~ measurements of q, 1 and <1> 111 • An error in sto1ch1omctry, for example, can be exaggerated over five times in the calculated reaction time. The results of the present simplified a nalysis of a complex reacting, recirculating flowfi eld based on elementary combustion theor y and information available in the literature generally display a good representa1ion of the governing physical and chemical processes in the opposed-jet flamcholder.…”

Section: Resultsmentioning

confidence: 99%