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A comprehensive CFD study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions

In this research, the spray combustion, soot formation and exhaust emissions of diesel, biodiesel, gasoline fuels and their mixtures are analysed in a constant volume chamber. A multicomponent kinetic mechanism (CDBG) suitable for diesel-biodiesel-gasoline mixtures developed by our research group is...

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Main Authors: Mohammad Zandie, Mohammad Zandie, Ng, Hoon Kiat, Gan, Suyin, Muhamad Said, Mohd. Farid, Cheng, Xinwei
Format: Article
Language:English
Published: Elsevier Ltd 2022
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/103627/1/MohdFaridMuhamadSaid2022_AComprehensiveCFDStudyoftheSprayCombustion.pdf
http://eprints.utm.my/103627/
http://dx.doi.org/10.1016/j.energy.2022.125191
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spelling my.utm.1036272023-11-20T03:29:52Z http://eprints.utm.my/103627/ A comprehensive CFD study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions Mohammad Zandie, Mohammad Zandie Ng, Hoon Kiat Gan, Suyin Muhamad Said, Mohd. Farid Cheng, Xinwei TJ Mechanical engineering and machinery In this research, the spray combustion, soot formation and exhaust emissions of diesel, biodiesel, gasoline fuels and their mixtures are analysed in a constant volume chamber. A multicomponent kinetic mechanism (CDBG) suitable for diesel-biodiesel-gasoline mixtures developed by our research group is utilised, and the associated physicochemical properties are thoroughly calculated. Adaptive mesh refinement scheme with appropriate mesh independency analysis are applied. Liquid penetration length, lift-off length, ignition delay and soot formation have been benchmarked against experimental data in the literature. A hybrid RANS-LES model, known as DES model, is used to simulate the turbulent condition. The effects of different ambient temperature/oxygen levels on the flame structure, soot formation and emissions of different ternary mixtures of D75|BD20|G5, D70|BD20|G10 and D65|BD20|G15 were analysed. D65|BD20|G15 resulted in a lower soot mass yield than that of BD100 (pure biodiesel) and D100 (pure diesel) for about 35% and 27%, respectively, at T = 900 K | O2 = 15%. Greater soot mass reductions for the tested fuels were captured by the decrease in ambient temperature from 900 K to 800 K by a factor of ~1/3 (same ambient O2 concentration). Lower nitrogen oxides (NOx) emissions were obtained for D100 by factors of ~1/2 at T = 900 K | O2 = 15% compared to BD100. Gasoline-added mixtures revealed lower NOx compared to BD100 (~20%) yet still higher than D100. Lower carbon dioxide (CO2) and carbon monoxide (CO) emissions were captured for D65|BD20|G15 compared to BD100 and D100. Elsevier Ltd 2022 Article PeerReviewed application/pdf en http://eprints.utm.my/103627/1/MohdFaridMuhamadSaid2022_AComprehensiveCFDStudyoftheSprayCombustion.pdf Mohammad Zandie, Mohammad Zandie and Ng, Hoon Kiat and Gan, Suyin and Muhamad Said, Mohd. Farid and Cheng, Xinwei (2022) A comprehensive CFD study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions. Energy, 260 (NA). pp. 1-19. ISSN 0360-5442 http://dx.doi.org/10.1016/j.energy.2022.125191 DOI : 10.1016/j.energy.2022.125191
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Mohammad Zandie, Mohammad Zandie
Ng, Hoon Kiat
Gan, Suyin
Muhamad Said, Mohd. Farid
Cheng, Xinwei
A comprehensive CFD study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions
description In this research, the spray combustion, soot formation and exhaust emissions of diesel, biodiesel, gasoline fuels and their mixtures are analysed in a constant volume chamber. A multicomponent kinetic mechanism (CDBG) suitable for diesel-biodiesel-gasoline mixtures developed by our research group is utilised, and the associated physicochemical properties are thoroughly calculated. Adaptive mesh refinement scheme with appropriate mesh independency analysis are applied. Liquid penetration length, lift-off length, ignition delay and soot formation have been benchmarked against experimental data in the literature. A hybrid RANS-LES model, known as DES model, is used to simulate the turbulent condition. The effects of different ambient temperature/oxygen levels on the flame structure, soot formation and emissions of different ternary mixtures of D75|BD20|G5, D70|BD20|G10 and D65|BD20|G15 were analysed. D65|BD20|G15 resulted in a lower soot mass yield than that of BD100 (pure biodiesel) and D100 (pure diesel) for about 35% and 27%, respectively, at T = 900 K | O2 = 15%. Greater soot mass reductions for the tested fuels were captured by the decrease in ambient temperature from 900 K to 800 K by a factor of ~1/3 (same ambient O2 concentration). Lower nitrogen oxides (NOx) emissions were obtained for D100 by factors of ~1/2 at T = 900 K | O2 = 15% compared to BD100. Gasoline-added mixtures revealed lower NOx compared to BD100 (~20%) yet still higher than D100. Lower carbon dioxide (CO2) and carbon monoxide (CO) emissions were captured for D65|BD20|G15 compared to BD100 and D100.
format Article
author Mohammad Zandie, Mohammad Zandie
Ng, Hoon Kiat
Gan, Suyin
Muhamad Said, Mohd. Farid
Cheng, Xinwei
author_facet Mohammad Zandie, Mohammad Zandie
Ng, Hoon Kiat
Gan, Suyin
Muhamad Said, Mohd. Farid
Cheng, Xinwei
author_sort Mohammad Zandie, Mohammad Zandie
title A comprehensive CFD study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions
title_short A comprehensive CFD study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions
title_full A comprehensive CFD study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions
title_fullStr A comprehensive CFD study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions
title_full_unstemmed A comprehensive CFD study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions
title_sort comprehensive cfd study of the spray combustion, soot formation and emissions of ternary mixtures of diesel, biodiesel and gasoline under compression ignition engine-relevant conditions
publisher Elsevier Ltd
publishDate 2022
url http://eprints.utm.my/103627/1/MohdFaridMuhamadSaid2022_AComprehensiveCFDStudyoftheSprayCombustion.pdf
http://eprints.utm.my/103627/
http://dx.doi.org/10.1016/j.energy.2022.125191
_version_ 1783876392226652160
score 13.211869

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