Measurements and modeling of nitric oxide formation in counterflow, premixed CH₄/O₂/N₂ flames

  • 4.88 MB
  • English

National Aeronautics and Space Administration, Glenn Research Center, Available from NASA Center for AeroSpace Information, National Technical Information Service [distributor , [Cleveland, Ohio], Hanover, MD, Springfield, VA
Nitric oxide., Counterflow., Measure and integration., Mathematical models., Laser induced fluorescence., Calibrating., Reaction kinetics., Premixed flames., Fuel combus
StatementD. Douglas Thomsen and Normand M. Laurendeau.
Series[NASA contractor report] -- NASA CR-2000-209804.
ContributionsLaurendeau, Normand M., NASA Glenn Research Center.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL15567891M

Get this from a library. Measurements and modeling of nitric oxide formation in counterflow, premixed CH₄/O₂/N₂ flames. [D Douglas Thomsen; Normand M. Laser-induced fluorescence (LIF) measurements of NO concentration were obtained in a series of flat, laminar, premixed counterflow CH 4 /O 2 /N 2 flames at atmospheric pressure with equivalence ratios ranging from to The counterflow configuration permits measurement of NO concentration profiles in the preheat zone, through the flamefront and into the postflame region of premixed by: Burning velocity and probe sampling measurements of the concentrations of O 2, CO 2, CO and NO in the post-flame zone of ethane + air flames are heat flux method was used for stabilization of laminar, premixed, non-stretched flames on a perforated plate burner at 1 atm.

Axial profiles of the concentrations of the major species were used to assess interaction of the flame with the Cited by:   A model for the prediction of the nitric oxide (NO) formation in turbulent nonpremixed flames is proposed.

Since the NO formation has a strong temperature sensitivity, the accurate prediction of the flame temperature under the consideration of radiative heat losses is required. The first part of the paper addresses the extension of a flamelet-based combustion model to account for radiative Cited by: The formation was followed by probing flames of ethylene, methane, or propane with N 2-O 2 mixtures.

The known kinetic laws of the well-understood N 2-O 2-NO system (limited by the rate of the reaction O+N 2 →N+NO) described the growth of nitric oxide in the post-flame gas, after hydrocarbons were consumed, but could not describe a faster, transient formation of nitric oxide in the primary Cited by: [12] C.P.

Fenimore, Formation of nitric oxide in premixed hydrocarbon flames. Proceedings of 13th International Symposium on Combustion, Combustion Institute Pittsburgh () DOI: /s(71)Author: Stanisław Gil, Wojciech Bialik.

Details Measurements and modeling of nitric oxide formation in counterflow, premixed CH₄/O₂/N₂ flames FB2

The GRIMECH version chemical kinetics mechanism is modified to provide improved predictions of NO concentrations in high-pressure (1 Cited by: 9.

Probe sampling measurements and modeling of nitric oxide formation in ethane + air flames Article in Combustion Science and Technology 86(1). We report the application of electronic-resonance-enhanced coherent anti-Stokes Raman scattering (ERE-CARS) for measurements of nitric oxide concentration ([NO]) in three different atmospheric pressure flames.

Visible pump ( nm) and Stokes ( nm) beams are used to probe the Q-branch of the Raman transition. A significant resonance enhancement is obtained by tuning an Cited by: Formation of nitric oxide in the combustion of methane—air mixtures of various compositions was studied numerically.

The system of equations takes into account direct and reverse elementary chemical reactions for 32 substances. A procedure for unified numerical calculation of the indicated process at the flame front and at large distances from it is by: 4.

Download Measurements and modeling of nitric oxide formation in counterflow, premixed CH₄/O₂/N₂ flames FB2

Modeling of radiation and nitric oxide formation in turbulent nonpremixed flames using a flamelet/progress variable formulation Matthias Ihme and Heinz Pitsch Citation: Phys. Flu (); doi: / Modeling of radiation and nitric oxide formation File Size: 3MB.

PLIF Measurements of Nitric Oxide and Hydroxyl Radicals Distributions in Swirled Stratified Premixed Flames J. 1Apeloig1,*, P. Gautier, E. Salaün1, B. Barviau1, The work presented in the current paper investigates the formation of NO pollutant from me.

Description Measurements and modeling of nitric oxide formation in counterflow, premixed CH₄/O₂/N₂ flames PDF

Nitric oxide (NO) is a simple gaseous monoxide that is involved in a variety of biological mechanisms in the mammalian body. NO is produced by a group of enzymes, nitric oxide synthases.

One of the more important functions of NO is to regulate the tone of blood vessels. As one of the most potent vasodilators known, NO modulates the Author: Christian Thorup, Leon C.

Moore. Burning velocity and probe sampling measurements of the concentrations of O 2, CO 2, CO, and NO in the postflame zone of the flames of H 2 +CO+CO 2 and air are reported. The heat flux method was used for stabilization of laminar, premixed, non-stretched flames on a perforated plate burner at 1 atm.

Axial profiles of the concentrations of major species were used to evaluate the influence of the Cited by: The prediction of nitric oxide (NO) formation in turbulent flames requires a modelling approach that takes into account the coupled nature of local turbulent mixing and chemical reaction.

NO production for known swirled and/or stratified lean premixed flames. The fuel staging parameter defined as the stratification ratio is studied for values of 1, 2, and 3, while the swirl fractions are 0, 25 and 33%, changing the flowfield from non-swirling conditions to high swirl numbers (up to ).

The implementation of simultaneous OH. Formation of nitrogen dioxide from nitric oxide and their measurement in clinically relevant circumstances Article (PDF Available) in BJA British Journal of Anaesthesia 82(2) March Formation and Destruction of Nitric Oxide in NO Doped Premixed Flames of C2H4, C2H6, and C3H8 at Atmospheric Pressure Article in Energy & Fuels 24(9).

With this model, Knyazkov et al. [48] analyzed the formation and destruction of nitric oxide in methane flames at atmospheric pressure. In recent numerical simulations, various natural gas. Top contributors to the provenance of Δ f H° of NO (g) The 20 contributors listed below account only for % of the provenance of Δ f H° of NO (g).

A total of 28 contributors would be needed to account for 90% of the provenance. Please note: The list is limited to 20 most important contributors or, if less, a number sufficient to account for 90% of the provenance. (called GS) and nitric oxide ppm–nitrogen dioxide 1 ppm (GS), respectively; nitrogen dioxide in nitrogen certified as nitrogen dioxide ppm–NOx ppm (NOx is the total amount of nitrogen oxides); and calibration gas certified as nitric oxide ppm–nitrogen dioxide Size: KB.

Despite growing reports on the biological action of nitric oxide (NO) as a function of NO payload, the validity of such work is often questionable due to the manner in which NO is measured and/or the solution composition in which NO is quantified.

To highlight the importance of measurement technique for a given sample type, NO produced from a small-molecule NO donor (N-diazeniumdiolated l. Introduction. Nitric oxide (NO) is a diatomic free radical that is extremely short lived in biological systems (less than 1 second in circulating blood) [].The established paradigm of NO biochemistry from production by NO synthases to activation of soluble guanylyl cyclase (sGC) to eventual oxidation to nitrite (NO 2 −) and nitrate (NO 3 −) may only represent part of NO’s effects in by: Nitric oxide's expansive physiological and regulatory roles have driven the development of therapies for human disease that would benefit from exogenous NO administration.

Already a number of therapies utilizing gaseous NO or NO donors capable of storing and delivering NO. Direct numerical simulations (DNS) of high hydrogen content (HHC) syngas nonpremixed jet flames have been carried out to study the nitric oxide (NO) formation. The detailed chemistry employed is the GRI updated with the influence of the NCN radical chemistry using flamelet generated manifolds (FGM).

Preferential diffusion effects have been considered via FGM tabulation Author: K K J Ranga Dinesh, E S Richardson, van Ja Jeroen Oijen, KH Luo, X Jiang.

Purchase Nitric Oxide and Other Small Signalling Molecules, Volume 72 - 1st Edition. Print Book & E-Book. ISBNThe use of exhaled nitric oxide measurements (F(E)NO) in clinical practice is now coming of age. There are a number of theoretical and practical factors which have brought this about.

Firstly, F(E)NO is a good surrogate marker for eosinophilic airway inflammation. High F(E)NO levels may be used to distinguish eosinophilic from non-eosinophilic Cited by: Quantitative Measurements of Nitric Concentration in High-Pressure, Swirl-Stabilized Spray Flames Oxide Clayton S.

Cooper and Normand M. Laurendeau Purdue University, West Lafayette, Indiana Prepared under Contract NAS National Aeronautics and Space Administration Glenn Research Center August   1. FASEB J. Feb 1;7(2) Measurement of nitric oxide in biological models.

Archer S(1). Author information: (1)Veterans Administration Medical Center Minneapolis, Minnesota Nitric oxide (NO) is a small, gaseous, paramagnetic radical with a high affinity for interaction with ferrous hemoproteins such as soluble guanylate cyclase and by:   Prieto L, Ferrer A, Ponce S, Palop J, Marín J.

Exhaled nitric oxide measurement is not useful for predicting the response to inhaled corticosteroids in subjects with Cited by:. FREE Nitric Oxide Measurement Handbook Your email address: For specific questions or to receive printed literature, send your request by email to [email protected] or call us ator fax us at n-heptane/air premixed turbulent flames in the high-Karlovitz portion of the thin reaction zone regime are characterized and modeled in this thesis using Direct Numerical Simulations (DNS) with detailed chemistry.

In order to perform these simulations, a time-integration scheme that can efficiently handle the stiffness of the equations solved is developed by: 1.Borland CD, Higenbottam TW. A simultaneous single breath measurement of pulmonary diffusing capacity with nitric oxide and carbon monoxide.

Eur Respir J. Jan; 2 (1)– Garat C, Jayr C, Eddahibi S, Laffon M, Meignan M, Adnot S. Effects of inhaled nitric oxide or inhibition of endogenous nitric oxide formation on hyperoxic lung by: