CFD analysis of combustion and emission characteristics of primary reference fuels: from transient Diesel spray to heavy-duty engine

Zhou, Qiyan; Lucchini, Tommaso; Novella, Ricardo; García-Oliver, José M; Lü, Xingcai

doi:10.1016/j.fuel.2021.120994

Cited by 12 publications

(2 citation statements)

References 62 publications

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“…CFD numerical simulations were conducted using the LibICE code, a set of solvers and libraries for IC engine simulations developed under the OpenFOAM technology. 35,37,50,58,59 The standard k2e model in the framework of RANS formulation was used for turbulence. Computational parcels were generated using a Rosin-Rammler probability density function, followed by the Reitz-Diwakar model, which reduces the secondary breakup to a continuous decrease in droplet radius.…”

Section: Resultsmentioning

confidence: 99%

Detailed prediction of HRR and NOx emissions in CI engines via a novel thermodynamic model with constant equivalence ratio zones

Tamborski

D’Errico

Lucchini

et al. 2022

International Journal of Engine Research

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This paper presents a novel, quasi dimensional-model for the simulation of the combustion process in compression-ignition engines. The model discretizes with a multiple number of zones the in-cylinder air-fuel mass on fixed values of local equivalence ratio, with the charge stratification determined from a 2D reconstruction via a one-dimensional control-volume-based spray approach. Reacting multi-zones are further split into three conceptual sub-zones: liquid, unburnt vapor and burnt vapor, in which chemical reactions proceed according to a tabulated kinetics of ignition (TKI) model. This approach provides a simple methodological framework for the combustion of direct injection of virtually every kind of liquid fuel and relies on a detailed phenomenological chemical/physical link of jet’s reacting phenomena. To account for engine geometry, a spray-wall interaction sub-model has been added to the axial spray. The model has been validated against experimental data and detailed CFD simulation results. First, the direct injection model (as a free jet) has been assessed with respect to ECN sprays A, C, and D experiments. For both the long injection and split injection cases, all the combustion phases are well predicted: premixed peak, mixing-controlled combustion, burn-out are seamlessly described and in good agreement with experimental and detailed CFD data. The wall interaction sub-model was validated with a suitable experiment where a reacting jet impinges on a mock-up wall inside a combustion vessel. Finally, the model has been validated against real heavy-duty engine experimental observations of 151 points of a complete engine map. The tuning of the model consists in two parameters, that are engine-specific, hence constant for the whole map. With these assumptions, the AHRR traces are well described in all simulated conditions. Mean predicted BSFC is only slightly underestimated (−2.3%), as it is the NOx production (−1.6%).

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Section: Resultsmentioning

confidence: 99%

Detailed prediction of HRR and NOx emissions in CI engines via a novel thermodynamic model with constant equivalence ratio zones

Tamborski

D’Errico

Lucchini

et al. 2022

International Journal of Engine Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…This recession phenomenon is able to consume UHC and thus reduces the emission of UHC in diesel engines [4]. Meanwhile, in the split-injection PPC strategies the combustion recession caused by the first injection plays an important role in the combustion and soot characteristics of the second injection [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Large Eddy Simulation of Combustion Recession: Effects of Ambient Temperature and Injection Pressure

Zhang

Ong

Pang³

et al. 2023

SSRN Journal

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A multi-time scales semi-decoupled CHT (Coupled Heat Transfer) model and its application on piston transient heat transfer simulation

Sun

Deng

Yang

et al. 2023

Applied Thermal Engineering

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CFD analysis of combustion and emission characteristics of primary reference fuels: from transient Diesel spray to heavy-duty engine

Cited by 12 publications

References 62 publications

Detailed prediction of HRR and NOx emissions in CI engines via a novel thermodynamic model with constant equivalence ratio zones

Detailed prediction of HRR and NOx emissions in CI engines via a novel thermodynamic model with constant equivalence ratio zones

Large Eddy Simulation of Combustion Recession: Effects of Ambient Temperature and Injection Pressure

A multi-time scales semi-decoupled CHT (Coupled Heat Transfer) model and its application on piston transient heat transfer simulation

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