Effect of the Injector Nozzle Hole Diameter and Number on the Spray Characteristics and the Combustion Performance in Medium-Speed Diesel Marine Engines

Kim, Byong-Seok; Yoon, Wook Hyeon; Ryu, Sung Hyup; Ha, Ji Soo

doi:10.4271/2005-01-3853

Cited by 33 publications

(19 citation statements)

References 13 publications

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“…Understanding the ignition characteristics of diesel spray combustion is critical as a longer ignition delay time (IDT) increases the local pre-combustion mixing, thus reducing emission [1,2]. Different nozzle diameter sizes (D noz ) show significant effect on the ignition characteristics in diesel engines [3][4][5][6][7]. Decreasing D noz was shown to reduce the IDT [3,7].…”

Section: Introductionmentioning

confidence: 99%

Large-eddy simulation of n-dodecane spray flame: Effects of nozzle diameters on autoignition at varying ambient temperatures

Ong

Pang²,

Bai

et al. 2021

Proceedings of the Combustion Institute

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Section: Introductionmentioning

confidence: 99%

Large-eddy simulation of n-dodecane spray flame: Effects of nozzle diameters on autoignition at varying ambient temperatures

Ong

Pang²,

Bai

et al. 2021

Proceedings of the Combustion Institute

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“…Hybrid wall treatment model is used [27] to ensure a gradual change between viscous sub-layer formulations and the wall functions. Kader's model extended by Popovac and Hanjalic is used to express temperature profile in the wall boundary layer [28]. WAVE breakup model is used for modeling the spray [29].…”

Section: Models Used and Validationmentioning

confidence: 99%

“…Kennedy-Hiroyasu-Magnussen model is used for soot prediction [30,27]. Details of above models can be found in [25][26][27][28][29][30].…”

Section: Models Used and Validationmentioning

confidence: 99%

Numerical investigation of piston bowl geometry and swirl ratio on emission from diesel engines

Gafoor

Gupta

2015

Energy Conversion and Management

102

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“…The wall spray interaction is predicted by walljet 1 model. The spray phenomenon is modelled by WAVE break-up model (20).Boundary wall layer temperature profile predictions has been carried out by Kader`s model (22). For a clearer picture, below table summarizes phenomenon and model used in AVL FIRE.…”

Section: Models Used In Simulationsmentioning

confidence: 99%

Effects of Piston Bowl Geometry on Combustion and Emission Characteristics on Diesel Engine: A CFD Case Study

Bawankar¹

2016

IJRET

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The present paper investigates effect of piston bowl geometry on combustion and emissions. One of the important parameters which affect the combustion in diesel engine is piston geometry. In this study four different piston geometries (HEMISPHERICAL, OMEGA, SINGLE CURVED, DOUBLE CURVED) have been selected for comparative study. Numerical investigation has been carried out using commercially available code AVL FIRE which is a finite volume based code .Automatic mesh generation feature of code is utilized for modelling. For validation of numerical model, simulation results of baseline shape have been validated with experimentally available results. Simulation has been carried out for various piston geometries while keeping parameters such as speed, compression ratio and mass of fuel injected constant. The study has been carried out at full as well as half load .A comparative study for in-cylinder pressure, rate of heat rejection, velocity and temperature field, turbulence kinetic energy has been performed .Emission and performance parameters like SOOT, NO ,efficiency and BSFC have been studied. The results indicated that omega shaped piston works best for the current setup. As compared to baseline shape of hemisphere, it gives 12% higher NO but 19% less SOOT. Also, the efficiency and BSFC are better for omega shaped piston.

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Effect of the Injector Nozzle Hole Diameter and Number on the Spray Characteristics and the Combustion Performance in Medium-Speed Diesel Marine Engines

Cited by 33 publications

References 13 publications

Large-eddy simulation of n-dodecane spray flame: Effects of nozzle diameters on autoignition at varying ambient temperatures

Large-eddy simulation of n-dodecane spray flame: Effects of nozzle diameters on autoignition at varying ambient temperatures

Numerical investigation of piston bowl geometry and swirl ratio on emission from diesel engines

Effects of Piston Bowl Geometry on Combustion and Emission Characteristics on Diesel Engine: A CFD Case Study

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