Computational Study of Stratified Combustion in an Optical Diesel Engine

Handle URI:
http://hdl.handle.net/10754/625055
Title:
Computational Study of Stratified Combustion in an Optical Diesel Engine
Authors:
Jaasim, Mohammed; Hernandez Perez, Francisco; Vallinayagam, R.; Vedharaj, S.; Johansson, Bengt; Im, Hong G. ( 0000-0001-7080-1266 )
Abstract:
Full cycle simulations of KAUST optical diesel engine were conducted in order to provide insights into the details of fuel spray, mixing, and combustion characteristics at different start of injection (SOI) conditions. Although optical diagnostics provide valuable information, the high fidelity simulations with matched parametric conditions improve fundamental understanding of relevant physical and chemical processes by accessing additional observables such as the local mixture distribution, intermediate species concentrations, and detailed chemical reaction rates. Commercial software, CONVERGE™, was used as the main simulation tool, with the Reynolds averaged Navier-Stokes (RANS) turbulence model and the multi-zone (SAGE) combustion model to compute the chemical reaction terms. SOI is varied from late compression ignition (CI) to early partially premixed combustion (PPC) conditions. The simulation results revealed a stronger correlation between fuel injection timing and combustion phasing for late SOI conditions, whereas the combustion phasing starts to decouple from SOI for early SOI cases. The predictions are consistent with the experimental observations, in terms of the overall trends in combustion and emission characteristics, while the high fidelity simulations provided further insights into the effects of mixture stratifications resulting from different SOI conditions.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center
Citation:
Mubarak ali MJ, Hernandez Perez F, Vallinayagam R, Vedharaj S, Johansson B, et al. (2017) Computational Study of Stratified Combustion in an Optical Diesel Engine. SAE Technical Paper Series. Available: http://dx.doi.org/10.4271/2017-01-0573.
Publisher:
SAE International
Journal:
SAE Technical Paper Series
Conference/Event name:
SAE World Congress Experience, WCX 2017
Issue Date:
28-Mar-2017
DOI:
10.4271/2017-01-0573
Type:
Conference Paper
Sponsors:
This work was funded by competitive research funding from King Abdullah University of Science and Technology (KAUST) under the Clean Combustion Research Center's research program. We also acknowledge funding from Saudi Aramco under the FUELCOM program. Finally, we would like to express our gratitude to our research Technician, Adrian I. Ichim for his support in carrying out the experiments at KAUST engine lab.
Additional Links:
https://saemobilus.sae.org/content/2017-01-0573
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorJaasim, Mohammeden
dc.contributor.authorHernandez Perez, Franciscoen
dc.contributor.authorVallinayagam, R.en
dc.contributor.authorVedharaj, S.en
dc.contributor.authorJohansson, Bengten
dc.contributor.authorIm, Hong G.en
dc.date.accessioned2017-06-19T09:21:45Z-
dc.date.available2017-06-19T09:21:45Z-
dc.date.issued2017-03-28en
dc.identifier.citationMubarak ali MJ, Hernandez Perez F, Vallinayagam R, Vedharaj S, Johansson B, et al. (2017) Computational Study of Stratified Combustion in an Optical Diesel Engine. SAE Technical Paper Series. Available: http://dx.doi.org/10.4271/2017-01-0573.en
dc.identifier.doi10.4271/2017-01-0573en
dc.identifier.urihttp://hdl.handle.net/10754/625055-
dc.description.abstractFull cycle simulations of KAUST optical diesel engine were conducted in order to provide insights into the details of fuel spray, mixing, and combustion characteristics at different start of injection (SOI) conditions. Although optical diagnostics provide valuable information, the high fidelity simulations with matched parametric conditions improve fundamental understanding of relevant physical and chemical processes by accessing additional observables such as the local mixture distribution, intermediate species concentrations, and detailed chemical reaction rates. Commercial software, CONVERGE™, was used as the main simulation tool, with the Reynolds averaged Navier-Stokes (RANS) turbulence model and the multi-zone (SAGE) combustion model to compute the chemical reaction terms. SOI is varied from late compression ignition (CI) to early partially premixed combustion (PPC) conditions. The simulation results revealed a stronger correlation between fuel injection timing and combustion phasing for late SOI conditions, whereas the combustion phasing starts to decouple from SOI for early SOI cases. The predictions are consistent with the experimental observations, in terms of the overall trends in combustion and emission characteristics, while the high fidelity simulations provided further insights into the effects of mixture stratifications resulting from different SOI conditions.en
dc.description.sponsorshipThis work was funded by competitive research funding from King Abdullah University of Science and Technology (KAUST) under the Clean Combustion Research Center's research program. We also acknowledge funding from Saudi Aramco under the FUELCOM program. Finally, we would like to express our gratitude to our research Technician, Adrian I. Ichim for his support in carrying out the experiments at KAUST engine lab.en
dc.publisherSAE Internationalen
dc.relation.urlhttps://saemobilus.sae.org/content/2017-01-0573en
dc.rightsArchived with thanks to SAE Technical Paper Seriesen
dc.subjectengine simulationsen
dc.subjectinjection timingen
dc.subjectOptical diesel engineen
dc.subjectpartially premixed combustionen
dc.subjectstratificationen
dc.titleComputational Study of Stratified Combustion in an Optical Diesel Engineen
dc.typeConference Paperen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalSAE Technical Paper Seriesen
dc.conference.date2017-04-04 to 2017-04-06en
dc.conference.nameSAE World Congress Experience, WCX 2017en
dc.conference.locationDetroit, MI, USAen
dc.eprint.versionPublisher's Version/PDFen
kaust.authorJaasim, Mohammeden
kaust.authorHernandez Perez, Franciscoen
kaust.authorVallinayagam, R.en
kaust.authorVedharaj, S.en
kaust.authorJohansson, Bengten
kaust.authorIm, Hong G.en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.