Effect of Biodiesel Fuel Properties and Its Blends on Atomization

Ahmed, Menatalla; Ejim, Chidirim; Fleck, Brian A.; Amirfazli, A.

doi:10.4271/2006-01-0893

Cited by 25 publications

(8 citation statements)

References 8 publications

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“…In addition, this diesel is the known D-2 type diesel provided by Ultramar (Canada). The physical properties of biodiesel (B100) and biodiesel blends B20 and B5 are obtained mainly from the material fact sheet of the same day/same batch production and also from the literature [22,23] that has a similar combination. In fact, a comparison between the repeated physical properties from the literature and the factsheet shows a negligible 5% difference.…”

Section: Methodsmentioning

confidence: 99%

Comparative Study of Biodiesel and Diesel Jets in Gaseous Crossflow

Farvardin

Johnson

Alaee

et al. 2013

Journal of Propulsion and Power

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This study compares the fundamental spray characteristics, such as penetration depth, droplet diameter, velocity, and volume flux of, biodiesel and diesel as well as their blends. Liquid jet is injected into an air crossflow with a speed of 58 m∕s. A series of experimental tests covering Weber numbers from 29-82, and momentum flux ratios from 10-133, are conducted using the shadowgraph method and phase Doppler particle analyzer. The shadowgraph images are processed to find the penetration depth and to investigate different regimes of breakup. The phase Doppler particle analyzer is used to capture droplet size distribution, velocity, and volume flux. The results differ remarkably in terms of breakup regimes and trajectory for biodiesel blends, which may be due to the high viscosity of biodiesel in comparison to diesel. For example, at a Weber number of 80, some bag breakups are observed on the biodiesel jet against the expectation that, at this Weber number, most of the liquids experience atomization mode.

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Section: Methodsmentioning

confidence: 99%

Comparative Study of Biodiesel and Diesel Jets in Gaseous Crossflow

Farvardin

Johnson

Alaee

et al. 2013

Journal of Propulsion and Power

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“…One important characteristic is the penetration which by its virtue varies directly to the injection pressure higher and lower for biodiesel and diesel respectively. Some studies investigated the influence of physical properties like fuel density and viscosity as reported in the works of (Ahmed, Ejim et al 2006) and (Ejim, Fleck et al 2007) where a bigger influence is given to the fuel viscosity. On a related level, the equipment usually used to inject biodiesel or diesel also has attention in the literature whether they are mechanical pump, injector, etc.…”

Section: Introductionmentioning

confidence: 99%

Numerical study for the spray characteristics of diesel engine powered by biodiesel fuels under different injection pressures

Al‐Dawody¹,

Al‐Farhany²,

Hamza³

et al. 2021

JER is an international, peer-reviewed journal that publishes f

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Great attention is directed towards the study of the spray phenomena theoretically and experimentally due to its dramatic effect on the combustion process that occurred in an internal combustion engine, in particular, the diesel engine. The spray macroscopic characteristic of diesel engines fueled with two different biodiesel fuels in addition to nominal diesel under various injection pressures has been investigated numerically in this work. The selected biofuels are Rapeseed methyl ester (RME), Waste cooking oil methyl ester (WCOME). The Russian simulation software Diesel-RK is used in this work. Four different injection pressures are used which are 200, 500, 800 and 1000 bar respectively. It is found that RME has higher spray penetration with a narrow spray angle due to high viscosity and large momentum compared to diesel fuel. The results reported that biodiesels have greater Sauter mean diameter (SMD) compared to pure diesel because of their higher viscosity and surface tension. Promising reduction in SMD comes with WCOME as the injection pressure increases. Cylinder pressure along with heat release is reduced in the case of biodiesel due to the reduction in heating values. The lowest ability to produce smoke is recorded for WCOME where 93% reduction is achieved followed by a 57% reduction for RME as compared to diesel. The obtained results are compared with the results of other researcher and the convergence between them is observed.

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“…Among various physical properties, viscosity was reported to play a dominant influence on droplet diameter. A similar study by Ahmed et al [69] reported a maximum increase of around 40% in SMD for biodiesel. A more detailed analytical study by Wang et al [30] based on gaseous turbulent jet theory [70,71] compares diesel and biodiesel sprays in terms of tip penetration, air entrainment, equivalence ratio and SMD.…”

Section: Analytical and Computational Spray Studiesmentioning

confidence: 51%

A Review on Atomization and Sprays of Biofuels for IC Engine Applications

Boggavarapu

Ravikrishna

2013

International Journal of Spray and Combustion Dynamics

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Ever increasing energy requirements, environmental concerns and energy security needs are strongly influencing engine researchers to consider renewable biofuels as alternatives to fossil fuels. Spray process being important in IC engine combustion, existing literature on various biofuel sprays is reviewed and summarized. Both experimental and computational research findings are reviewed in a detailed manner for compression ignition (CI) engine sprays and briefly for spark ignition (SI) engine sprays. The physics of basic atomization process of sprays from various injectors is included to highlight the most recent research findings followed by discussion highlighting the effect of physico-chemical properties on spray atomization for both biofuels and fossil fuels. Biodiesel sprays are found to penetrate faster and have narrow spray plume angle and larger droplet sizes compared to diesel. Results of analytical and computational models are shown to be useful in shedding light on the actual process of atomization. However, further studies on understanding primary atomization and the effect of fuel properties on primary atomization are required. As far as secondary atomization is concerned, changes in regimes are observed to occur at higher air-jet velocities for biodiesel compared to those of diesel. Evaporating sprays revealed that the liquid length is longer for biodiesel. Pure plant oil sprays with potential use in CI engines may require alternative injector technology due to slower breakup as compared to diesel. Application of ethanol to gasoline engines may be feasible without any modifications to port fuel injection (PFI) engines. More studies are required on the application of alternative fuels to high pressure sprays used in Gasoline Direct Injection (GDI) engines.

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Effect of Biodiesel Fuel Properties and Its Blends on Atomization

Cited by 25 publications

References 8 publications

Comparative Study of Biodiesel and Diesel Jets in Gaseous Crossflow

Comparative Study of Biodiesel and Diesel Jets in Gaseous Crossflow

Numerical study for the spray characteristics of diesel engine powered by biodiesel fuels under different injection pressures

A Review on Atomization and Sprays of Biofuels for IC Engine Applications

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