The Rate-Controlled Constrained-Equilibrium Combustion Modeling of n-Pentane/Oxygen/Diluent Mixtures

Du, Linghao; Yu, Guangying; Wang, Ziyu; Metghalchi, Hameed

doi:10.1115/1.4042532

Cited by 7 publications

(2 citation statements)

References 43 publications

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“…In the mentioned study measured laminar burning speeds were compared with simulation results using GRI-Mech 3.0 mechanism. The rate-controlled constrained-equilibrium combustion modeling of n-Pentane mixtures were conducted in [27]. The detailed kinetic model which was used in this study contained 133 species and 922 reactions.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Unsteady Premixed Micro/Macro Counterflow Flames for Lean to Rich Methane/Air Mixture

Edalati-nejad

Fanaee

Ghodrat

2021

Journal of Energy Resources Technology

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In the current work, an unsteady analysis of methane/air premixed counterflow flame is carried out for different flame conditions and stability parameters considering different strain rate values. The results are presented at unsteady and final steady conditions, and the impact of time-dependent regimes and variations in equivalence ratio, from lean flame to rich one, are analyzed. The governing equations including continuity, momentum, energy, and species are numerically solved with a coupled simple and Piso algorithm. It is also found that when the strain rate value is 1000 s−1, for flame stability, the hydraulic distance of the microchannel must be at least 0.05 mm. Increasing the strain rate results in decreasing the time of stabilizing temperature distribution with a faster quasi-steady equilibrium. The necessity of time-dependent analysis is to comprehend the variations in the main factors of flame structure before reaching the finalized steady-state condition. Therefore, by designing an intermittent automatic valve, if the flow stops in time period of 0.0025 s and starts again, the formation of NO2 and CO2 will be reduced about 50% and 9%, respectively, in a case with a = 100 s−1.

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Section: Introductionmentioning

confidence: 99%

Investigation of Unsteady Premixed Micro/Macro Counterflow Flames for Lean to Rich Methane/Air Mixture

Edalati-nejad

Fanaee

Ghodrat

2021

Journal of Energy Resources Technology

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“…The flame simulation of n-pentane fuels was conducted in Ref. 9. These researchers applied multi-step modeling that simulated 133 species and 922 reactions.…”

Section: Introductionmentioning

confidence: 99%

The stabilized methane–air counterflow flame into a plus-shaped chamber with platinum catalyst–coated walls: An emission estimation

Edalati-nejad

Fanaee

Ghodrat

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Analysis of unsteady CH4/Air counterflow premixed flame into a newly designed plus-shaped channel is investigated in this study. The main objective is to explore the impact of platinum catalytic–coated walls of the combustion chamber on the flame characteristics and pollutant emissions. The OpenFOAM platform is used as a numerical simulation tool to investigate the effects of various equivalence ratios, from the range of lean to rich flames, and passing the reaction time on the counterflow flame characteristics and pollutant emissions of a plus-shaped chamber with the platinum catalyst–coated wall. Results show that the integrated temperature over the proposed geometry with platinum surfaces increases by 18% compared to the non-catalytic case. The numerical simulation revealed that presence of the platinum catalyst on the wall of the chamber has significant impact on reducing the pollutant emissions. This is evident as a 99.5% decrease on NO2 emission and a 58% reduction on CO2 formation are found.

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Numerical Investigation of a Turbulent Jet Flame With a Compact Skeletal Mechanism

Noume

Bomba

Obounou

2019

Journal of Energy Resources Technology

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The present work assesses the capabilities of a compact skeletal mechanism, derived using an in-house reduction code, to accurately model chemical processes in a turbulent CH4/H2/N2 flame. To this end, a numerical investigation of the DLR-A flame is performed using the free and open-source code openfoam with the derived mechanism. Specifically, the numerical investigation is performed using the Reynolds-averaged Navier–Stokes (RANS) approach and a compact skeletal mechanism consisting of 51 elementary reactions among 21 species. The skeletal mechanism is derived from the GRI3.0 mechanism using an improved multistage reduction method. The k − ɛ model is used as a closure for the RANS equations, while the source terms in the species and energy transport equations are closed by the partially stirred reactor (PaSR) model. The radiation term is modeled by the P-1 model. The numerical results show a good agreement with the experimental data.

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The Rate-Controlled Constrained-Equilibrium Combustion Modeling of n-Pentane/Oxygen/Diluent Mixtures

Cited by 7 publications

References 43 publications

Investigation of Unsteady Premixed Micro/Macro Counterflow Flames for Lean to Rich Methane/Air Mixture

Investigation of Unsteady Premixed Micro/Macro Counterflow Flames for Lean to Rich Methane/Air Mixture

The stabilized methane–air counterflow flame into a plus-shaped chamber with platinum catalyst–coated walls: An emission estimation

Numerical Investigation of a Turbulent Jet Flame With a Compact Skeletal Mechanism

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