Survey of Rate Constants in the N/H/O System

Hanson, Ronald K.; Salimian, S.

doi:10.1007/978-1-4684-0186-8_6

Cited by 271 publications

(154 citation statements)

References 51 publications

Supporting

Mentioning

140

Contrasting

Order By: Relevance

“…The minimum and maximum rate coefficient factors [14] ( f ; F) represent the combined effects of the uncertainties of both the NHz and HNCO measurements; i.e., fkZa and Fkza give the minimum and maximum possible values of k2, determined by the uncertainty analysis. The activation energy of the above expression for kz, is a parameter determined by the least-squares fitting procedure and is subject to large uncertainties.…”

Section: Reaction (3~))mentioning

confidence: 99%

A shock tube study of H + HNCO → NH₂ + CO

Mertens

Kohse‐Höinghaus

Hanson

et al. 1991

Int J of Chemical Kinetics

Self Cite

View full text Add to dashboard Cite

The reaction of atomic hydrogen with isocyanic acid (HNCO) to produce the amidogen radical (NHZ) and carbon monoxide,has been studied in shock-heated mixtures of HNCO dilute in argon. Time-histories of the ground-state NHZ radical were measured behind reflected shock waves using cw, narrowlinewidth laser absorption at 597 nm, and HNCO time-histories were measured using infrared emission from the fundamental u2-band of HNCO near 5 pm. The second-order rate coefficient of reaction (2(a)) was determined to be:

show abstract

Section: Reaction (3~))mentioning

confidence: 99%

A shock tube study of H + HNCO → NH₂ + CO

Mertens

Kohse‐Höinghaus

Hanson

et al. 1991

Int J of Chemical Kinetics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The reaction rate constants used in FLUENT were selected based on the evaluation of Hanson and Salimian (Hanson et al, 1984). To calculate the NO concentration in turbulence combustion, the timeaveraged formation rate of NO must be computed at each computational cell.…”

Section: Chemical Equilibrium Methods and Reading Lookupmentioning

confidence: 99%

Simulation of H2-Air Non-Premixed Flame Using Combustion Simulation Technique to Reduce Chemical Mechanisms

Fukumoto¹,

Ogami²

2012

Fluid Dynamics, Computational Modeling and Applications

View full text Add to dashboard Cite

“…The formation of thermal NO x is determined according to the extended Zeldovich mechanism, and the rate constants have been selected based on the evaluation of Hanson and Salimian [67]. The needed concentrations of O, H and OH have been taken directly from the local species mass fractions.…”

Section: Thermal No X Modelmentioning

confidence: 99%

Assessment against Experiments of Devolatilization and Char Burnout Models for the Simulation of an Aerodynamically Staged Swirled Low-NOx Pulverized Coal Burner

et al. 2017

View full text Add to dashboard Cite

Abstract:In the next few years, even though there will be a continuous growth of renewables and a loss of the share of fossil fuel, energy production will still be strongly dependent on fossil fuels. It is expected that coal will continue to play an important role as a primary energy source in the next few decades due to its lower cost and higher availability with respect to other fossil fuels. However, in order to improve the sustainability of energy production from fossil fuels, in terms of pollutant emissions and energy efficiency, the development of advanced investigation tools is crucial. In particular, computational fluid dynamics (CFD) simulations are needed in order to support the design process of low emission burners. Even if in the literature several combustion models can be found, the assessment of their performance against detailed experimental measurements on full-scale pulverized coal burners is lacking. In this paper, the numerical simulation of a full-scale low-NO x , aerodynamically-staged, pulverized coal burner for electric utilities tested in the 48 MW th plant at the Combustion Environment Research Centre (CCA -Centro Combustione e Ambiente) of Ansaldo Caldaie S.p.A. in Gioia del Colle (Italy) is presented. In particular, this paper is focused on both devolatilization and char burnout models. The parameters of each model have been set according to the coal characteristics without any tuning based on the experimental data. Thanks to a detailed description of the complex geometry of the actual industrial burner and, in particular, of the pulverized coal inlet distribution (considering the entire primary air duct, in order to avoid any unrealistic assumption), a correct selection of both devolatilization and char burnout models and a selection of suited parameters for the NO x modeling, accurate results have been obtained in terms of NO x formation. Since the model parameters have been evaluated a priori, the numerical approach proposed here could be suitable to be applied as a performance prediction tool in the design of pulverized coal burners.

show abstract

Survey of Rate Constants in the N/H/O System

Cited by 271 publications

References 51 publications

A shock tube study of H + HNCO → NH₂ + CO

A shock tube study of H + HNCO → NH₂ + CO

Simulation of H2-Air Non-Premixed Flame Using Combustion Simulation Technique to Reduce Chemical Mechanisms

Assessment against Experiments of Devolatilization and Char Burnout Models for the Simulation of an Aerodynamically Staged Swirled Low-NOx Pulverized Coal Burner

Contact Info

Product

Resources

About

Survey of Rate Constants in the N/H/O System

Cited by 271 publications

References 51 publications

A shock tube study of H + HNCO → NH2 + CO

A shock tube study of H + HNCO → NH2 + CO

Simulation of H2-Air Non-Premixed Flame Using Combustion Simulation Technique to Reduce Chemical Mechanisms

Assessment against Experiments of Devolatilization and Char Burnout Models for the Simulation of an Aerodynamically Staged Swirled Low-NOx Pulverized Coal Burner

Contact Info

Product

Resources

About

A shock tube study of H + HNCO → NH₂ + CO

A shock tube study of H + HNCO → NH₂ + CO