Numerical study on the application of biodiesel and bioethanol in a multiple injection diesel engine

Asadi, Asgar; Kadijani, Omid Nouri; Doranehgard, Mohammad Hossein; Bozorg, Mehdi Vahabzadeh; Xiong, Qingang; Shadloo, Mostafa Safdari; Li, Larry K.B.

doi:10.1016/j.renene.2019.11.088

Cited by 62 publications

(14 citation statements)

References 24 publications

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“…Figure 14 shows the radial distribution of the HO2 (hydroperoxyl) radical. This radical denotes the recombination process in the reacting flow [50,51] and it is known as a key species in the occurrence of ignition [52]. The production of this radical is depending on the generation of CH2O, O2, H2O, N2, OH, and HCO through table 3.…”

Section: Resultsmentioning

confidence: 99%

Numerical Investigation of the Effects of Swirling Hot Co-Flow on MILD Combustion of a Hydrogen–Methane Blend

Mousavi

Kamali

Sotoudeh

et al. 2020

Journal of Energy Resources Technology

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This paper examines the effects of swirl hot co-flow on the combustion behavior of a moderate or intense low oxygen dilution (MILD) burner fueled by a mixture of methane and hydrogen. Toward this goal, the realizable k-ɛ turbulence model, GRI. 2.11 reaction mechanism, and the discrete ordinates radiation model are incorporated into a computational modeling of the reactive flow. The numerical results are, first, favorably compared against the existing experimental data. Subsequently, a number of swirl co-flows are implemented, and structures of the resultant reactive flows are investigated systematically. The outcomes indicate that increasing the swirl velocity leads to the reduction of ignition delay and significantly enhances the reaction completion. The analysis of the spatial distribution of hydroxyl and formyl (OH and HCO) radicals reveals that swirling MILD combustion radially extends the reaction zone in comparison with the conventional MILD combustion. Yet, it reduces the length of the reactive region and allows for the occurrence of heat release in a shorter axial distance from the outlet fuel nozzle. Further, the addition of swirl reduces the production of carbon monoxide through its influences upon flow temperature and generation of formyl radical. However, it is found that swirling hot co-flow intensifies NOx emissions by strengthening of prompt and thermal mechanisms of NOx production. Reducing the temperature of the recycled flue gas is deemed to be an effective way of resolving this issue.

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Section: Resultsmentioning

confidence: 99%

Numerical Investigation of the Effects of Swirling Hot Co-Flow on MILD Combustion of a Hydrogen–Methane Blend

Mousavi

Kamali

Sotoudeh

et al. 2020

Journal of Energy Resources Technology

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“…Deviation from the state of local thermal equilibrium in porous media with chemical reactions has been already reported [18,19,[52][53][54][55][56]]. However, many numerical works still use local thermal equilibrium for reactive flows in porous media.…”

Section: Deviation From Local Thermal Equilibrium and Nusselt And Sherwood Numbersmentioning

confidence: 99%

Numerical study of nonlinear mixed convection inside stagnation-point flow over surface-reactive cylinder embedded in porous media

Hong

Alizadeh

Ardalan

et al. 2020

J Therm Anal Calorim

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“…The results showed that the artificial neural network model and the AVL-Fire model were in good agreement with the experimental values. Asadi et al [23] studied the application of biodiesel and ethanol in multi-cylinder diesel engine by a validated model in the AVL-Fire environment. The comparison of the simulated value and the experimental value showed that the use of numerical software could well predict the combustion process and emission characteristic of the engine.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Diesel-Ethanol Dual Fuel Ratio on Performance and Emission Characteristics of Diesel Engine

Zhang

Tian

et al. 2021

Processes

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In this paper, a four-stroke engine diesel was employed to investigate the effects of different fuel mixture ratios of diesel and ethanol on engine performance and emission characteristics in terms of cylinder temperature, heat release rate, brake power, brake thermal efficiency, brake specific fuel consumption, and cylinder pressure. The corresponding simulation model of diesel engine was developed by AVL-Fire coupled CHEMKIN code, and an improved chemical kinetics mechanism containing 34 reactions and 19 species was employed to simulate the fuel spray process and combustion process. The simulation model was validated by experimental results under 100% and 50% load conditions and used to simulate the combustion process of diesel engine fueled with pure diesel and diesel–ethanol blends with 10%, 20%, and 30% ethanol by volume, respectively. The results showed that the increase of ethanol content in the blended fuel had a certain negative impact on the performance characteristic of diesel engine and significantly improved the emission characteristic of the engine. With the ethanol proportion in the blended fuel increased to 10%, 20%, and 30%, the brake thermal efficiency of the engine increased by 2.24%, 4.33%, and 6.37% respectively. However, the brake-specific fuel consumption increased by 1.56%, 3.49%, and 5.74% and the power decreased by 1.58%, 3.46%, and 5.54% respectively. In addition, with the ethanol proportion in the blended fuel increased to 10%, 20%, and 30%, the carbon monoxide emission decreased by 34.69%, 47.60%, and 56.58%, and the soot emission decreased by 7.83%, 15.24%, and 22.52% respectively. Finally, based on the combining fuzzy and grey correlation theory, nitrogen oxide emission has the highest correlation with engine power and brake-specific fuel consumption. The values reach 0.9103 and 0.8945 respectively. It shows that nitrogen oxide emission and cylinder pressure have a significant relationship on engine power and brake-specific fuel consumption.

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Numerical study on the application of biodiesel and bioethanol in a multiple injection diesel engine

Cited by 62 publications

References 24 publications

Numerical Investigation of the Effects of Swirling Hot Co-Flow on MILD Combustion of a Hydrogen–Methane Blend

Numerical Investigation of the Effects of Swirling Hot Co-Flow on MILD Combustion of a Hydrogen–Methane Blend

Numerical study of nonlinear mixed convection inside stagnation-point flow over surface-reactive cylinder embedded in porous media

Effects of Different Diesel-Ethanol Dual Fuel Ratio on Performance and Emission Characteristics of Diesel Engine

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