A review of phenomenological spray penetration modeling for diesel engines with advanced injection strategy

Liu, Long; Peng, Yan; Dai, Li‐Xin; Han, Changfu; Zhao, Ningbo

doi:10.1177/1756827720934067

Cited by 13 publications

(10 citation statements)

References 93 publications

(180 reference statements)

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“…The description of spray process may be dividing in two categories, macroscopic characteristics such fuel spray penetration and cone angle of spray, and microscopic characteristics such as the spray break-up length and SMD. The unavoidable complex phenomenon in both experimental as well as and theoretical research, the entire phenomenon of some detailed microscopic characteristics like spray break-up length and atomization still remains unknown (Liu et al 2020). Nevertheless, for the research of macroscopic characteristics, the fuel spray development can be critically streamlined, where the fuel spray can be preserved as mixture, ignoring microscopic characteristics (Liu et al 2020).…”

Section: Fuel Spray Characteristicsmentioning

confidence: 99%

“…It can also use to simulate the extreme circumstances that could be difficult to achieve using experimentations. Hence, in realworld engineering uses, fuel injection and spray models are commonly favored in the development and further research in engines (Liu et al 2020).…”

Section: Empirical Models/correlations For Injection and Spray Characteristicsmentioning

confidence: 99%

“…Both, these characteristics are extremely relying on the combustion. The study of spray formation is required to optimize the combustion in a diesel engine (Liu et al 2020).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mathematical Modeling of Injection and Spray Characteristics of a Diesel Engine: A Review

Lahane

Deshmukh

Nandgaonkar

2021

Energy, Environment, and Sustainability

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In a diesel engine, the injection phenomenon is vital because it impacts fuel spray characteristics and mixture formation process. Accurate control of operating fuel injection parameters (injection timing, flow rate shaping and fuel in-line pressure) is necessary as it affects mixture formation method of air and fuel. If the energy content of fuel is less, to sustain the desired power output, the injection duration would increase. The increased injection duration would affect the important combustion parameter predominantly the combustion duration. So, the optimization of the injection system is needed for a diesel engine for better performance and emission characteristic. The fuel atomization characteristics, and subsequently spray development compete a crucial part in the progress of better combustion and engine performance, as it affects the mixture formation in the combustion chamber. There are studies and models available for diesel fuel spray with and without swirl. If the bulk modulus of fuel is higher, the fuel inline pressure increases significantly. The bulk modulus implies compressibility of a fuel. The longer fuel spray penetration observed with rise in the fuel inline pressure further it also increases the chances of wall impingement. It is one of the main durability issues of a diesel engine. On the other hand, it is important to note that the rise in pressure of injection is a useful approach to enhance fuel atomization characteristics and to enhance mixing of air and fuel. The higher bulk modulus of fuel results in advanced injection timing which further leads to high NOx emission. Furthermore, the increased spray penetration increases NOx emission which forms generally around periphery of spray. Therefore, it is necessary to evaluate the spray development and fuel atomization characteristics for reduction of exhaust emissions and subsequently, enhance the efficiency of the engine. The current research work is aimed at the extent review of computational/mathematical models of spray characteristics and empirical models of injection and spray process of engine. The challenges for modeling of spray characteristics are also highlighted. Numerous research works have been referred and analyzed for the effect of injection parameters and fuel properties on injection and spray characteristics of the engine.

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Section: Fuel Spray Characteristicsmentioning

confidence: 99%

Section: Empirical Models/correlations For Injection and Spray Characteristicsmentioning

confidence: 99%

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Mathematical Modeling of Injection and Spray Characteristics of a Diesel Engine: A Review

Lahane

Deshmukh

Nandgaonkar

2021

Energy, Environment, and Sustainability

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“…Moreover, there has been no consensus in droplet breakup criterion from CFD simulations of spray flows, especially in a turbulent flow field, see References. 19–22 for complete review.…”

Section: Introductionmentioning

confidence: 99%

Analytical modelling of laminar drag and freestream turbulence eddies on droplet breakup criterion for internal combustion engines

Diemuodeke

Sher

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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The paper presents novel analytical droplet breakup criteria, on Weber number (We)-relative turbulence intensity and We-Ohnesorge (Oh) representations, based on the critical Weber number. The We-Oh analytical criterion stressed the importance of turbulence effects on We-Oh breakup criterion at high We-Oh applications. In developing the analytical models the energy criterion for a disturbed parent droplet to disintegrate and the dual-timescale for turbulent shear in droplet dispersion were considered. The present model has an advantage over to two popular droplet breakup criterion models (Pilch-Erdman and Kolev) because the present model has the ability to support a parametric investigation of droplet breakup characteristics in turbulent flow fields. The Weber-relative turbulence intensity and We-Oh analytical breakup criteria are in good agreement with published experimental data. It is envisaged that the analytical model will be incorporated into larger CFD codes for spray simulation. The continuous research in this important area will present the next generation fuel injectors for improved fuel economy of internal combustion engines, especially high-pressure direct injection engines. The model has the potential to be applied in other natural and engineering systems.

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“…In particular the modelling of the spray is critical. 6 In the past years, the authors have developed a 1D combustion model that was successfully validated against measurement in bombs with free Diesel jets. [7][8][9][10] However, combustion chambers of Diesel engines are quite confined so that the jet interacts with the wall well before the end of combustion.…”

Section: Introductionmentioning

confidence: 99%

Development of a wall jet model dedicated to 1D combustion modelling for CI engines

Osorio

Tauzia

Maiboom

2021

International Journal of Spray and Combustion Dynamics

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Diesel engines are becoming smaller as technology advances, which means that the fuel spray (or jet) interacts with the cylinder walls before combustion starts. Most fuel injection 1D models (especially for diesel fuel) do not consider this interaction. Therefore, a wall-jet sub-model was created on an Eulerian 1D diesel spray model. It was calibrated using data from the literature and validated with experimental data from a fuel spray impacting a plate in a constant volume combustion chamber. Results show that the spray moving along the wall has a higher mixing rate but less penetration as an equivalent free jet, therefore they show a similar volume. Spray-wall interaction creates a stagnation zone right before the impact with the wall, and friction of the jet with the wall is relatively low. All these phenomena are well captured by the wall-jet sub-model.

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A review of phenomenological spray penetration modeling for diesel engines with advanced injection strategy

Cited by 13 publications

References 93 publications

Mathematical Modeling of Injection and Spray Characteristics of a Diesel Engine: A Review

Mathematical Modeling of Injection and Spray Characteristics of a Diesel Engine: A Review

Analytical modelling of laminar drag and freestream turbulence eddies on droplet breakup criterion for internal combustion engines

Development of a wall jet model dedicated to 1D combustion modelling for CI engines

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