Computational modeling of Diesel spray combustion with multiple injections

Qiyan Zhou (Corresponding author), Tommaso Lucchini, Gianluca D’Errico, Noud C.J. Maes, L.M.T. (Bart) Somers, Xing-cai Lu

Onderzoeksoutput: Bijdrage aan tijdschriftCongresartikelpeer review

4 Citaten (Scopus)
180 Downloads (Pure)

Samenvatting

Multiple injection strategies are commonly used in conventional Diesel engines due to the flexibility for optimizing heat-release timing with a consequent improvement in fuel economy and engine-out emissions. This is also desirable in low-temperature combustion (LTC) engines since it offers the potential to reduce unburned hydrocarbon and CO emissions. To better utilize these benefits and find optimal calibrations of split injection strategies, it is imperative that the fundamental processes of multiple injection combustion are understood and computational fluid dynamics models accurately describe the flow dynamics and combustion characteristics between different injection events. To this end, this work is dedicated to the identification of suitable methodologies to predict the multiple injection combustion process. Two different approaches: Representative Interactive Flamelet model (RIF) and Tabulated Flamelet Progress Variable (TFPV) are compared and multiple n-dodecane Spray A injections from the Engine Combustion Network are simulated using the RANS methods with both standard k − ε and k − ω SST models. Evaluations of different turbulence and combustion models are carried out by comparing computed and measured data in terms of the mixing, penetration, first- and second-stage ignition characteristics, flame structures and soot formation.
Originele taal-2Engels
Artikelnummer2020-01-1155
Aantal pagina's20
TijdschriftSAE Technical Papers
Volume2020
DOI's
StatusGepubliceerd - 14 apr. 2020

Financiering

Authors acknowledge the financial support from FPT-Motorenforschuang AG.Michael Harter (FPT). The first author also gratefully acknowledges the financial support from the China Scholarship Council (No. 201806230180) and Natural Science Foundation of China (No. 51425602, 51961135105) for her study in Politecnico di Milano, Italy.

FinanciersFinanciernummer
National Natural Science Foundation of China51961135105, 51425602
China Scholarship Council201806230180

    Vingerafdruk

    Duik in de onderzoeksthema's van 'Computational modeling of Diesel spray combustion with multiple injections'. Samen vormen ze een unieke vingerafdruk.

    Citeer dit