Zur Kurzanzeige

dc.contributor.author
Srna, Aleš
dc.contributor.author
Bolla, Michele
dc.contributor.author
Boulouchos, Konstantinos
dc.contributor.author
Wright, Yuri
dc.date.accessioned
2021-10-28T08:30:59Z
dc.date.available
2017-06-11T12:46:31Z
dc.date.available
2021-10-28T08:30:59Z
dc.date.issued
2014-10-13
dc.identifier.issn
0148-7191
dc.identifier.issn
2688-3627
dc.identifier.other
10.4271/2014-01-2738
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/90079
dc.description.abstract
This study presents an application of the conditional moment closure (CMC) combustion model to marine diesel sprays. In particular, the influence of fuel evaporation terms has been investigated for the CMC modeling framework. This is motivated by the fact that substantial overlap between the dense fuel spray and flame area is encountered for sprays in typical large two-stroke marine diesel engines which employ fuel injectors with orifice diameters of the order of one millimeter. Simulation results are first validated by means of experimental data from the Wärtsilä optically accessible marine spray combustion chamber in terms of non-reactive macroscopic spray development. Subsequently, reactive calculations are carried out and validated in terms of ignition delay time, ignition location, flame lift-off length and temporal evolution of the flame region. Finally, the influence of droplet terms on spray combustion is analyzed in detail. The effect of evaporation into the mixture fraction variance transport equation was seen to play a prominent role concerning autoignition and flame stabilization: both ignition delay and flame lift-off length are considerably increased when evaporation effects are included. This was found to be attributed to the strong spatial overlap between evaporation and combustion - typical for marine sprays - leading to an increase in the local scalar dissipation rate in the evaporating region. Overall, inclusion of evaporation terms resulted in improved agreement with experimental data. These findings are contrary to previous investigations for typical automotive diesel sprays reporting only a minor influence of evaporation. Consequently, this study constitutes an extension of former analyses to large marine fuel injection configurations and emphasizes the importance of such effects for the simulation of marine diesel sprays.
en_US
dc.language.iso
en
en_US
dc.publisher
SAE International
en_US
dc.title
CMC Model Applied to Marine Diesel Spray Combustion: Influence of Fuel Evaporation Terms
en_US
dc.type
Conference Paper
ethz.journal.title
SAE Technical Papers
ethz.pages.start
2014-01-2738
en_US
ethz.size
14 p.
en_US
ethz.event
SAE 2014 International Powertrain, Fuels & Lubricants Meeting (FFL 2014)
en_US
ethz.event.location
Birmingham, United Kingdom
en_US
ethz.event.date
October 20-22, 2014
en_US
ethz.identifier.nebis
003911313
ethz.publication.place
New York, NY
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::02668 - Inst. f. Energie- und Verfahrenstechnik / Inst. Energy and Process Engineering::03611 - Boulouchos, Konstantinos (emeritus) / Boulouchos, Konstantinos (emeritus)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::02668 - Inst. f. Energie- und Verfahrenstechnik / Inst. Energy and Process Engineering::03611 - Boulouchos, Konstantinos (emeritus) / Boulouchos, Konstantinos (emeritus)
ethz.date.deposited
2017-06-11T12:46:51Z
ethz.source
ECIT
ethz.identifier.importid
imp5936525c25c3627343
ethz.ecitpid
pub:141813
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2017-07-13T12:25:22Z
ethz.rosetta.lastUpdated
2022-03-29T14:58:58Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=CMC%20Model%20Applied%20to%20Marine%20Diesel%20Spray%20Combustion:%20Influence%20of%20Fuel%20Evaporation%20Terms&rft.jtitle=SAE%20Technical%20Papers&rft.date=2014-10-13&rft.spage=2014-01-2738&rft.issn=0148-7191&2688-3627&rft.au=Srna,%20Ale%C5%A1&Bolla,%20Michele&Boulouchos,%20Konstantinos&Wright,%20Yuri&rft.genre=proceeding&rft_id=info:doi/10.4271/2014-01-2738&
 Printexemplar via ETH-Bibliothek suchen

Dateien zu diesem Eintrag

DateienGrößeFormatIm Viewer öffnen

Zu diesem Eintrag gibt es keine Dateien.

Publikationstyp

Zur Kurzanzeige