Superequilibrium and thermal nitric oxide formation in turbulent diffusion flames

Drake, Michael C.; Correa, Sanjay M.; Pitz, Robert W.; Shyy, Wei; Fenimore, C.P.

doi:10.1016/0010-2180(87)90126-x

Cited by 131 publications

(36 citation statements)

References 22 publications

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“…In actual combustion processes, the value of [O] is larger than the equilibrium value. When local equilibrium is not applied to the O atom, the predicted result for the rate of NO formation is larger than that for the case assuming local equilibrium [23,64]. However, it is smaller than the result of experimental measurement.…”

Section: Thermal Nomentioning

confidence: 46%

Recent research and development of combustion simulation

Aoki

Suzuki

Hisaeda

et al. 2001

Heat Trans. Asian Res.

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We present (1) gas fuel combustion rate expressions using the full kinetic reaction mechanism and the reduced mechanism, (2) a comparison of calculated results by Lagrangian and Eulerian methods on spray and solid particles, (3) the wall boundary treatment such as a wall function and low Reynolds number model, (4) a devolatilization reaction model of pulverized coal such as the FLASHCHAIN model, (5) kH turbulence model and LES approach on combustion flow field, (6) radiative heat transfer in combustion, (7) soot formation in the flame, (8) NOx formation mechanism, and (9) treatment on unburned particle fragmentation. Considering this overview of the above-mentioned modeling, the future of combustion simulation is discussed. Key words: Combustion, numerical simulation, LES, radiative heat transfer, soot formation Overview of Combustion SimulationCombustion is a complicated phenomenon which involves motion, conduction, convection, and radiative heat transfer, radical ionic reaction of the fluid, and so on. It is even more difficult to solve the combustion on an individual gaseous molecule in its present state, a situation which has already been realized in the case of fluid dynamics. It thus becomes necessary to carry out calculations using the best available model.

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Section: Thermal Nomentioning

confidence: 46%

Recent research and development of combustion simulation

Aoki

Suzuki

Hisaeda

et al. 2001

Heat Trans. Asian Res.

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“…The concentrations of these species do not simply increase monotonically to equilibrium values but instead exceed equilibrium by several orders of magnitude before returning to equilibrium values. These "super-equilibrium" concentrations, a common feature of fast oxidation reactions (e.g., Drake et al, 1987;Drake and Blint, 1988), occur because species (e.g., OH, H and HO 2 ) formed during the oxidation of H 2 do not immediately react to form H 2 O (R1A). These results suggest that high (i.e., equilibrium) concentrations of certain oxidised trace species may form at volcanic vents over timescales of $1 s, supporting the general approach taken by previous studies (e.g., Bobrowski et al, 2007;Roberts et al, 2009;von Glasow, 2010) where high temperature thermodynamic models for vent processing are used to generate input compositions for kinetic models of volcanic plumes at ambient temperatures.…”

Section: Kinetic Model Results For O-n-h-ar Chemistrymentioning

confidence: 99%

The enigma of reactive nitrogen in volcanic emissions

Martin

Ilyinskaya

Oppenheimer

2012

Geochimica et Cosmochimica Acta

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“…The sensor was located at least two flame lengths from the fuel nozzle exit, where the combustion product was found to be well-mixed with the diluting air [23]. No sampled gas was required to calculate NO x concentration, thus shortening the response time.…”

Section: No X Measurementmentioning

confidence: 99%