Modeling wall film formation and vaporization of a gasoline surrogate fuel

Kobashi, Yoshimitsu; Zama, Yoshio; Kuboyama, Tatsuya

doi:10.1016/j.ijheatmasstransfer.2019.119035

Cited by 18 publications

(9 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…34 This model was selected due to its reliability and several studies have proven how this model effectively mimics experimental results for applications similar to this study. 32,35 The wall heat transfer calculations were conducted using the following equations:…”

Section: Computational Setupmentioning

confidence: 99%

A Computational Investigation of Engine Heat Transfer with Ducted Fuel Injection

Şener

Nilsen

Biles

et al. 2023

International Journal of Engine Research

View full text Add to dashboard Cite

Ducted fuel injection (DFI) is an innovative method that curtails or prevents soot formation in direct-injection compression-ignition engines. DFI uses a simple duct, positioned outside each injector hole, facilitating the fuel/charge gas mixing before ignition. This reduces the equivalence ratio below two, in the autoignition zone, which in turn decreases soot formation. But this method also reduces fuel-conversion efficiency. This study investigates the effects of DFI on in-cylinder heat transfer. Experiments with conventional diesel combustion (CDC) and DFI were performed at four different dilution levels. Computational fluid dynamics (CFD) simulations were carried out at conditions matching those of the experiments, and the simulations were validated by the experimental data. The CFD simulations enabled to examine of in-cylinder heat release and temperature distributions. The heat transfer to the piston, head, and cylinder was investigated. The results show that DFI increased the heat transfer to the walls compared to CDC under the same conditions. This could help explain why DFI has been observed to reduce fuel-conversion efficiency by approximately 1% (absolute) relative to CDC under certain conditions. The efficiency loss typically decreases with dilution, such that DFI can improve fuel-conversion efficiencies relative to CDC at higher dilution levels.

show abstract

Section: Computational Setupmentioning

confidence: 99%

A Computational Investigation of Engine Heat Transfer with Ducted Fuel Injection

Şener

Nilsen

Biles

et al. 2023

International Journal of Engine Research

View full text Add to dashboard Cite

show abstract

“…The effects of wall condition (dry/wet), wall temperature, and liquid film thickness on the droplet-wall interaction regimes were also considered. A critical Weber number was also introduced to distinguish the regime transition under wet wall conditions, which was based on the experimental investigation of Cossali et al 26 Senda model has been adopted in many recent studies, [27][28][29][30] and the improved agreement between the numerical predictions and experimental measurements was reported.…”

Section: Introductionmentioning

confidence: 99%

Combined experimental and numerical study on fuel deposition characteristics of an impinging PFI spray with different impingement geometries

Huang

Luo

2022

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

This paper presents a combined experimental and numerical study on the fuel deposition characteristics during the Port fuel injection (PFI) spray impingement process. The numerical models mainly consisted of a newly developed atomization model, the Senda spray impingement model, and the Bai-Gosman liquid film model. A group of measurement methods were used to hierarchically calibrate and validate the numerical models. It was found that the calibrated models were able to predict the time-resolved morphology of the impinging spray, as well as the shape, area, and thickness distribution of the deposited fuel film with a good reliability. Then the calibrated models were used to study the effects of impingement distance ( Lw) and impingement angle ( θw) on the fuel film deposition. The results showed that as Lw increases, the film area ( Af) and film mass ( mf) rise faster and reach higher final values. As θw increases, Af and mf grow slower, and their final values are hugely reduced. Increasing Lw and decreasing θw can effectively reduce the average film thickness ( hf,a). Af is mainly affected by the contact area between the spray plumes and the impinging wall, while mf is also affected by the dominant droplet-wall interaction regime.

show abstract

“…However, the limited cylinder space with GDI may easily lead to the phenomenon of wall wetting on the piston crown and cylinder wall due to spray impingement, which lowers the combustion efficiency and increases the level of hydrocarbon and particulate matter emissions significantly [1][2][3]. Currently, with requirements on emissions for health and environmental protection becoming increasingly stringent, fuel impingement and its consequent wall wetting have been subject to increased attention [4,5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of fuel volatility on the heat transfer dynamics on piston surface due to the pulsed spray impingement

Zhou

Liang

Murad

et al. 2021

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

Modeling wall film formation and vaporization of a gasoline surrogate fuel

Cited by 18 publications

References 37 publications

A Computational Investigation of Engine Heat Transfer with Ducted Fuel Injection

A Computational Investigation of Engine Heat Transfer with Ducted Fuel Injection

Combined experimental and numerical study on fuel deposition characteristics of an impinging PFI spray with different impingement geometries

Investigation of fuel volatility on the heat transfer dynamics on piston surface due to the pulsed spray impingement

Contact Info

Product

Resources

About