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Theoretical Analysis of Nitric Oxide Production in a Methane/Air Turbulent Diffusion Flame

Marble, Frank E. (1980) Theoretical Analysis of Nitric Oxide Production in a Methane/Air Turbulent Diffusion Flame. EPA Reports, EPA-600/7-80-018. Environmental Protection Agency , Washington, DC.

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The coherent flame model is applied to the methane-air turbulent diffusion flame with the objective of describing the production of nitric oxide. The example of a circular jet of methane discharging into a stationary air atmosphere is used to illustrate application of the model. In the model, the chemical reactions take place in laminar flame elements which are lengthened by the turbulent fluid motion and shortened when adjacent flame segments consume intervening reactant. The rates with which methane and air are consumed and nitric oxide generated in the strained laminar flame are computed numerically in an independent calculation. The model predicts nitric oxide levels of approximately 80 parts per million at the end of the flame generated by a 30.5 cm (1 foot) diameter jet of methane issuing at 3.05 x 10^3 cm/sec (100 ft/sec). The model also predicts that this level varies directly with the fuel jet diameter and inversely with the jet velocity. A possibly important nitric oxide production mechanism, neglected in the present analysis, can be treated in a proposed extension to the model.

Item Type:Report or Paper (Technical Report)
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Additional Information:© 1980, National Service Center for Environmental Publications (NSCEP). The authors wish to acknowledge an essential contribution of the technical staff of the Energy and Environmental Research Corporation to this work. [EPA] Contract No. 68-02-2613 Program Element No. INE829 EPA Project Officer: W.S. Lanier
Group:Guggenheim Jet Propulsion Center
Funding AgencyGrant Number
Environmental Protection Agency68-02-2613
Subject Keywords:Flames; Nitrogen oxide(NO); Combustion; Air pollution; Turbulence; Diffusion flames; Mathematical models; Methane; Shear flow
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Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion CenterUNSPECIFIED
Series Name:EPA Reports
Issue or Number:EPA-600/7-80-018
Record Number:CaltechAUTHORS:20101209-090337380
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Official Citation:A Theoretical Analysis of Nitric Oxide Production in a Methane/Air Turbulent Diffusion Flame.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21255
Deposited By: Ruth Sustaita
Deposited On:14 Dec 2010 23:16
Last Modified:03 Oct 2019 02:21

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