Technical Paper
Enhancing ducted fuel injection simulations: assessment of RANS turbulence models using LES data
2024-04-09
2024-01-2689
Diesel engine-based transportation is nowadays looking for cleaner combustion solutions and ducted fuel injection (DFI) is emerging as a cutting-edge technology due to its potential to drastically curtail engine-out soot emissions. Although the DFI capability to abate soot formation throughout the diesel combustion process has been demonstrated both in constant-volume and optical engine conditions, its optimization and understanding is still needed for its exploitation on series production diesel engines. For this purpose, computational fluid dynamics (CFD) coupled with low-cost turbulence models, like RANS, can be a powerful tool, especially in the industrial context. However, it is often challenging to obtain reliable RANS-based CFD simulations, especially due to the high dependence of the various state-of-the-art turbulence models on the case study.