Effect of O<sub>2</sub> concentration in ambient mixture and multiphase radiation on pollutant formation in ECN spray-A

Mukut, Khaled Mosharraf; Roy, S.C.

doi:10.1080/13647830.2020.1721561

Cited by 7 publications

(4 citation statements)

References 47 publications

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“…The fuel mass flow rate is based on a tabulated injection profile recommended by ECN [11]. The aforementioned method to model the injection process is similarly performed by numerous studies [14,24]. In the present study, temperature-dependent fuel properties are considered for the liquid spray parcels.…”

Section: Cfd Submodelsmentioning

confidence: 99%

“…They suggested that the strategies aiming for soot reducing need to be adjusted according to different O 2 levels. Mukut et al [14] used a semi-empirical two-equation soot model and a detailed method of moments (MOM) soot model to study the effects of O 2 levels on soot formation. It was found that the peak soot volume fraction (SVF) increases with increasing O 2 levels.…”

Section: Introductionmentioning

confidence: 99%

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Large eddy simulation of soot formation and oxidation for different ambient temperatures and oxygen levels

Zhang

Ong

Pang³

et al. 2022

Applied Energy

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Section: Cfd Submodelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Large eddy simulation of soot formation and oxidation for different ambient temperatures and oxygen levels

Zhang

Ong

Pang³

et al. 2022

Applied Energy

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“…The secondary breakup of the droplets is modeled using the Reitz-Diwakar model [24], where the stripping breakup constant (C s ) is set to 10. The combination of the Rosin-Rammler model and the Reitz-Diwakar model has been widely used to model breakup process of spray [25,26]. Collision between particles is not taken into account due to their minor effect on penetration [27].…”

Section: Les Submodelsmentioning

confidence: 99%

An investigation on early evolution of soot in n-dodecane spray combustion using large eddy simulation

Zhang

Ong

Pang³

et al. 2021

Fuel

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“…The contribution of CO2, H2O, CO and soot were taken into account. Mukut and Roy [230] extended this radiation model by including the radiative contribution of the spray phase using the formulation developed by Roy et al [231]. They showed that the effect of spray and gas phase radiation on soot is minimal in the ECN Spray A combustion chamber and gas-phase radiation has a greater influence on NO formation than the spray-phase radiation.…”

Section: High Pressure Internal Combustion Enginesmentioning

confidence: 99%

The impact of radiative heat transfer in combustion processes and its modeling – with a focus on turbulent flames

Liu

Consalvi

Coelho

et al. 2020

Fuel

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Radiative heat transfer (RHT) is often the dominant mode of heat transfer in flames, fires, and combustion systems and affects significantly temperature distributions directly and kinetically controlled chemical processes indirectly. Modeling RHT accurately in multidimensional flames and combustion systems is challenging mainly due to the highly spectral dependence of radiative properties of combustion products, the high computational cost of solving the radiative transfer equation (RTE), and the strong turbulence and radiation interactions (TRI). Significant progress has been made in all the three aspects in the last three decades and the state-of-the-art models and methods have been incorporated into CFD practice for modeling fires, turbulent jet flames, and turbulent combustion in combustion systems. In this article, we first discuss the coupling between RHT and combustion and the important role played by RHT in some fundamental flame phenomena. Then we discuss the state-of-the-art radiation models with a focus on RTE solvers, radiative property models and TRI. Next, we review the recent simulations of turbulent combustion systems involving these state-of-the-art radiation models. Finally, we provide concluding remarks and some potential research areas to advance RHT modeling in multiphase reacting flows. Nomenclature, , area normal to directions x, y and z [m 2 ] non-grey stretching factor for WSGG, SLW, and FSK methods absorption cross-section of a soot primary particle [m 2 ] absorption cross-section of a soot aggregate [m 2 ] diameter [m] , , integral over a control angle of the direction cosines relative to x, y and z-axis particle size parameter [-] radiant fraction [-] array of variables defining the absorption coefficient, = { , , , } Ω solid angle [sr] Subscript Fuel direction j spectral line S soot at a given wavenumber Superscript aggregate lth direction (DOM) or lth control angle (FVM) mth direction (DOM) or mth control angle (FVM) primary particle Operators 〈 〉 Reynolds averaged quantity ′ Reynolds fluctuating quantity ̅ filtered (or resolved) quantity ′′ subgrid-scale (or residual) fluctuation Recently, quasi-MC methods [43], [44] were employed to solve RHT problems in 3D participating media, aimed at the improvement of the convergence rate, and therefore the computational efficiency. In these methods, the random numbers are replaced by low-

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Effect of O₂ concentration in ambient mixture and multiphase radiation on pollutant formation in ECN spray-A

Cited by 7 publications

References 47 publications

Large eddy simulation of soot formation and oxidation for different ambient temperatures and oxygen levels

Large eddy simulation of soot formation and oxidation for different ambient temperatures and oxygen levels

An investigation on early evolution of soot in n-dodecane spray combustion using large eddy simulation

The impact of radiative heat transfer in combustion processes and its modeling – with a focus on turbulent flames

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Effect of O2 concentration in ambient mixture and multiphase radiation on pollutant formation in ECN spray-A

Cited by 7 publications

References 47 publications

Large eddy simulation of soot formation and oxidation for different ambient temperatures and oxygen levels

Large eddy simulation of soot formation and oxidation for different ambient temperatures and oxygen levels

An investigation on early evolution of soot in n-dodecane spray combustion using large eddy simulation

The impact of radiative heat transfer in combustion processes and its modeling – with a focus on turbulent flames

Contact Info

Product

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Effect of O₂ concentration in ambient mixture and multiphase radiation on pollutant formation in ECN spray-A