Scaling fuel sprays for different size diesel engines

Zhou, Xinyi; Li, Tie; Lai, Zheyuan; Wang, Bin

doi:10.1016/j.fuel.2018.03.167

Cited by 36 publications

(20 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the three diesel combustion scaling laws described in Refs. [2,3], the operation conditions are described previously [1]. The engine speed is set constant between the large and small engines for the speed law, while the fuel injection pressure is set constant between the large and small engines for the pressure law.…”

Section: Datamentioning

confidence: 99%

Simulation data for similarity of spray combustion processes in marine low-speed diesel engines

Wei

2020

Data in Brief

Self Cite

View full text Add to dashboard Cite

Scaled model experiments are very useful for reducing time, cost and energy consumption in marine diesel engine development. This data article is based on the research work which examines the potential of scaled model experiments for marine low-speed diesel engines. Two engines of 340 and 520 mm bore diameters are employed to conduct this numerical scaling work based on three diesel combustion scaling laws. Data on similarity of peak swirl ratio, heat transfer losses, liquid and vapor penetration length, ignition delay, in-cylinder peak temperature, peak carbon monoxide (CO), peak hydrocarbon (HC) and carbon dioxide (CO2) emissions for various fuel injection timing are provided. The data in this paper are valuable reference for researchers or engineers who attempt to conduct scaled model experiments in marine diesel engine development.

show abstract

Section: Datamentioning

confidence: 99%

Simulation data for similarity of spray combustion processes in marine low-speed diesel engines

Wei

2020

Data in Brief

Self Cite

View full text Add to dashboard Cite

show abstract

“…The evaporating spray characteristics were measured in a combustion chamber with optical access of 100 mm in diameter, and one can refer to previous study 27 for details about the chamber design. The premixed burn procedures were employed for generating the in-cylinder pressure, composition and temperature thermodynamic conditions when piston moves near the top dead center.…”

Section: Experimental Setupsmentioning

confidence: 99%

“…Later, Takada et al 26 realized the spray similarity under the non-evaporating condition by employing a step-hole nozzle. Recently, Zhou et al 27,28 compared the similarity of free spray, wall-impinging spray and split-injected spray with three scaling laws. They found that the P law is better to scale the non-evaporating spray characteristics.…”

Section: Introductionmentioning

confidence: 99%

Scaling liquid penetration in evaporating sprays for different size diesel engines

Wei

Wang

2019

International Journal of Engine Research

Self Cite

View full text Add to dashboard Cite

Scaled model experiments can greatly reduce the cost, time and energy consumption in diesel engine development, and the similarity of spray characteristics has a primary effect on the overall scaling results of engine performance and pollutant emissions. However, although so far the similarity of spray characteristics under the non-evaporating condition has been studied to some extent, researches on scaling the evaporating sprays are still absent. The maximum liquid penetration length has a close relationship with the spray evaporation processes and is a key parameter in the design of diesel engine spray combustion system. In this article, the similarity of maximum liquid penetration length is theoretically derived based on the hypotheses that the spray evaporation processes in modern high-pressure common rail diesel engines are fuel–air mixing controlled and local interphase transport controlled, respectively. After verifying that the fuel injection rates are perfectly scaled, the similarity of maximum liquid penetration length in evaporating sprays is studied for three scaling laws using two nozzles with hole diameter of 0.11 and 0.14 mm through the high-speed diffused back-illumination method. Under the test conditions of different fuel injection pressures, ambient temperatures and densities, the lift-off law and speed law lead to a slightly increased maximum liquid penetration length, while the pressure law can well scale the maximum liquid penetration length. The experimental results are consistent with the theoretical analyses based on the hypothesis that the spray evaporation processes are fuel–air mixing controlled, indicating that the local interphase transports of energy, momentum and mass on droplet surface are not rate-controlled steps with respect to spray evaporation processes.

show abstract

“…[2][3][4][5] Because more and more research is constantly directed to the understanding and control of pollutant formation, 6 the majority of the spray and ICE communities has dedicated considerable effort toward improving the knowledge of SWI both experimentally and numerically. 4,5,[7][8][9][10][11][12][13][14][15][16][17][18][19][20] The literature presents numerous studies that have addressed SWI from fundamental or applied standpoints. Within the former category, there has been a multitude of studies that focused on single droplet impingement or a train of droplets impacting on rigid surfaces.…”

Section: Introductionmentioning

confidence: 99%

Toward predictive and computationally affordable Lagrangian–Eulerian modeling of spray–wall interaction

Torelli

Scarcelli

Som

et al. 2019

International Journal of Engine Research

View full text Add to dashboard Cite

The work presented in this article focuses on improving the understanding of spray–wall interaction phenomena and the predictivity of computational models for modern internal combustion engine–like conditions. Previous work from the authors highlighted some of the limitations of the currently available spray–wall interaction sub-models, especially those based on experimental observations carried out on single droplet impingement of non-hydrocarbon fluids. Previous experimental observations and direct numerical simulations provided unique qualitative and quantitative details that were leveraged to improve Lagrangian–Eulerian simulations of spray–wall interaction. In this work, Yarin and Weiss’ theory for droplet train impingements, as interpreted by Stanton and Rutland, was implemented in the CONVERGE software. A novel and mathematically rigorous calculation of the impingement frequency for Lagrangian parcels was proposed to replace the zero-droplet-spacing assumption present in the original model and improve the prediction of droplet splash. Preliminary testing and validation of the new formulation against experiments carried out in a constant volume vessel showed encouraging results. The feedback loop between experiments, Lagrangian–Eulerian simulations, and direct numerical simulations also motivated the investigation of the surface roughness model available in the Lagrangian–Eulerian framework. This part of the study pointed out the importance of correctly predicting the interaction between liquid and surrounding gas in the near-wall region. Overall, the results shown indicate that correctly capturing the pre-impingement physics and liquid–gas interaction, together with improving splash predictions, was key for improving the accuracy of Lagrangian–Eulerian computational fluid dynamics simulations of spray–wall impingement.

show abstract

Scaling fuel sprays for different size diesel engines

Cited by 36 publications

References 35 publications

Simulation data for similarity of spray combustion processes in marine low-speed diesel engines

Simulation data for similarity of spray combustion processes in marine low-speed diesel engines

Scaling liquid penetration in evaporating sprays for different size diesel engines

Toward predictive and computationally affordable Lagrangian–Eulerian modeling of spray–wall interaction

Contact Info

Product

Resources

About