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    <title>UTas ePrints - Computational fluid dynamics modelling of residual fuel oil combustion in the context of marine diesel engines</title>
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<meta content="Computational fluid dynamics modelling of residual
fuel oil combustion in the context of marine diesel
engines" name="eprints.title" />
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<meta content="heavy residual fuel oil, droplet vaporization and decomposition model, ignition
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<meta content="A simplified model is presented for vaporization and combustion of heavy residual
based fuel oil in high-pressure sprays, in the context of marine diesel engines. The fuel is
considered as a mix of residual base and cutter stock. The model accounts for multiple fuel components
as well as limited diffusion rates and thermal decomposition rates within droplets by
the use of straight-line relationships for the saturation pressure of combustible fuel vapour at
the droplet surface as functions of droplet temperature. The energy required for decomposition
of heavy molecules is accounted for. Combustion is modelled using a timescale that is the
sum of a kinetic timescale based on a single-step reaction and a turbulent timescale based on
turbulent mixing rates. The ignition timescale is based on a simple three-equation model.
Cellwise ignition is employed. The heavy fuel oil model is applied to two different constant
volume chambers that are used to test ignition and combustion quality of marine heavy fuel
oil, using the computational fluid dynamics code StarCD version 3.2. Good agreement is shown
between trends in measured and computed data including ignition delay, burn rate and spatial
distribution of spray and flame parameters. The model is tested for two representative fuels,
one with good ignition and combustion properties and one poor. Essentially only two parameters
need to be changed to set the fuel quality. These are the ignition delay factor and the
activation energy for the high-temperature kinetics. Further tuning of the model to specific
fuels is possible by modifying the saturation temperature relationships." name="eprints.abstract" />
<meta content="2006" name="eprints.date" />
<meta content="International Journal of Engine Research" name="eprints.publication" />
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<meta content="I Methodology; Start.I) version 3.20, CD_Adapco_ Group, 2004.
2 Ra, Y. and Reitz, R. D. The application of a multicomponent
droplet vaporisation model to gasoline
direct injection engines. lilt. }. Engine Res., 2003,
4(3), 193-2ie.
3 Katsoulakos, P. S., Pontlkis, C. N., Wills, C. M. R., Armstrong, G., Richardson, D., and Piyasiri, T. Assessment of the combustion performance of
residual fuels in a diesel engine. In CIMAC 1985,
paper D58, 19B5.
4 Faeth, G. M. Current status of droplet and liquid
combustion. Prog. Energy Combust, Sci., 1977, 3,
191-234.
5 Williams, A. Fundamentals of oil combustion. Prog.
Energy Combust. Sci., 1976,2, 167--179.
6 Liddy, I, l~ New laboratory techniques for characterising
the ignition and combustion properties
of residual fuels. Trans. Inst Mar: Engng, 1984, 96,
paper 67,9-12.
7 Uehara, J., Shimizu, K., Ornata, T., and Hatashi, T.
Effect of asphalicne and carbon residue in marine
fuel on combustion performance. In CIMAC
Congress, Copenhagen, 1998, pp, 357-367.
a Takasaki, K., Tajima, H., Nakashima, M., Ishida, H.,
and Osafune, S. Combustion characteristics of
trouble-making bunker fuel oil. In CIMAC Congress,
Hamburg, 2001, pp. 620-629.
9 Lara-Urbane]a, P. and Sirignano, W. A. Theory of
transient multicomponent droplet vaporisation in a
convective field. In Proceedings of the Eighteenth
Symposium (International) on Combustion, 1981
(The Combustion Institute, Pittsburgh. Pennsylvania).
10 Adomeit, P., Lang, 0., Schulz, 8., and Weng, W. CFD
simulation of diesel injection and combustion. SAE
Technical Paper 2002·01-0945, 2002.
II Bartok, W. and Sarofim, A. F. Fossil fuel
combustion, A Source Book, 1991 (John Wiley,
Chichester) .
12 Heitz, It D. and Diwakar, H. D. Effect of drop
breakup on fuel sprays. SAE'Iechnical Paper BG04G9.
1986.
13 Reitz, R. D. and Diwakar, R. D. Structure of highpressure
fuel sprays. SAE Technical Paper 87059B,
1987.
14 Baumgarten, C., Lettmann, H., and Merker, G. P.
Modelling of primary and secondary breakup processes
in high pressure diesel sprays. In CIMAC
Congress, Kyoto. 2004.
15 Arai, M., Tabata, M., Hiroyasu, H., and Shimizu, M.
Dlsintegrattug process and spray characterisation of
fuel jet injected by a diesel nozzle. SAE Technical
Paper 840275, 1984.
16 Hsiang, L. P. and Faeth, G. M. Near-limit drop
deformation and secondary breakup. Int. ;.Multiphase
Flow. 1992. 18(5),635-652.
17 Reitz, R. D. Modeling atomization processes in highpressure
vaporizing sprays. Atomisation and Spray
'lechnol., 1987,3.309-3:17.
18 von Kuensberg Sarre, C., Kong, S., and Reitz, R. D.
Modelling the effects of injector nozzle geometry on
diesel sprays. SAE Technical Paper 1999-01-0912.
1999.
19 Hlroyasu, H. and Aral, M. Structures of fuel sprays
in diesel engines. SAETechnical Paper 900475, 1990.
20 O'Rourke, P. J. Coliectiue drop effects 011 uaporising
liquid sprays. Ph D Thesis, University of Princeton,
1981.
21 Ikegami, M., Xu, G., Ikeda, K., Honma, S.,
Nagaishi, H., Dietrich, D. 1.., and Takeshita,Y
Distinctive stages of single heavy oil droplet under
rnicrogravity. Fuel, 2003. 82, 293-304.
22 Gosman, A. D. and Ioannides, S. I. Aspects of
computer simulation of liquid-fuelled combustors.
Am. IlIsI. AeroI/O II t. Astronaut. l. Energy; 1983. 7(6),
4B2-490.
23 Baert, R. S. G. A mathematical model for heavy
droplet vaporisation and pyrolysis in a high temperature
inert gas. Combust. Sci. Technol., 1993, 96,
125-147.
24 Shyu, R., Chen, C. S., Goudie, G. 0., and El-Wakil,
M. M. Multi-component heavy fuel drop histories in
a high-temperature now fleld. Fuel. 1972, 51.
135-145.
25 Chen, C. S. and El-Wakil, M. M. Experimental and
theoretical studies of burning drops of hydrocarbon
mixtures. Proc. lnstn Mech. Engrs, 1969, 184, (3]).
26 Bird, R. B., Stewart, E. W., and Ughtfoot, E. N.
Transport phenomena, 1966 (John Wiley. New York).
27 Borman, G. L. and Ragland, K. W. Combustion
engineering, 1998 (WCBIl'vIcGraw-Hill, New York).
28 Zhu, G.-S. and Reitz, R. D. A model for highpressure
vaporisation of droplets of complex liquid
mixtures using continuous thermodynamics. lilt. l,
Heat and Mass Transfer, 2001, 45, 495-507.
29 Abraham, J., Bracco, R V., and Reitz, R. D.
Comparison of computed and measured premixed
charge engine combustion. Combust. Flame, 1985,
60. 309-322.
30 Patterson, M. A., Kong, S. C., Hampson, G. J., and
Heitz, R. D. Modelling the effects of fuel injection
characteristics on diesel engine soot and NO x
emissions. SAE Technical Paper 940523. 1994.
31 Magnussen, B. F. and Hjertager, B. H. On mathemarical
modelling of turbulent combustion with
special emphasis on soot formation and combustion.
In Proceedings of the l.Gth Symposium (International)
on Combustion. 197G (The Combustion
Institute, Pittsburgh, Pennsylvania).
32 Turns, S. R. All introduction to combustion, 2000
(McGraw-Hili, New York).
33 Halstead, M. P., Kirsch, L J., and Quinn, C. P. The
autoignition of hydrocarbon fuels at high temperatures
and pressures - f tting of a mathematical
model. Combust. Flame, 1997, 30, 45--46.
34 Weisser, G. Modelling ofcombustion and nitric oxide
formation for medium-speed 01 diesel engines: a comparison
ofzero- and three-dimensional approaches.
PhD Thesis. Diss. ETH No. 14465, Swiss Federal
Institute of Technology, Zurich, 20(H.
35 Nishida, K. and Hiroyasu, H. Simplified three-dimensional
modelling of mixture formation and
coIII bustlon in a DI diesel engine. SAE Technical
Paper B902GD, 1!l89.
36 Senecal, P. K., Pomraning, E., Richards, K. J.,
Briggs, r. E., Choi, C. Y., McDavid, R. M., and
Patterson, M. A. Multi-dimensional modelling of
direct injection diesel spray liquid length and flame
lift-off length using CFD and parallel detailed
chemistry. SAE Technical Paper 2003-01-01043,
2003.
37 Tasklnen, P., Karvinen, R., Liljenfeldt, G., and Salminen, H. Simulation of heavy fuel spray and combustion in a medium speed diesel engine. SAE Technical Paper 962053, 1996.
38 Hou, Z. x., Abraham, J., and Siebers, D. L. Threedimensional
computations of diesel sprays in a very high pressure chamber. SAE Paper 941896, 1994." name="eprints.referencetext" />
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<meta content="A simplified model is presented for vaporization and combustion of heavy residual
based fuel oil in high-pressure sprays, in the context of marine diesel engines. The fuel is
considered as a mix of residual base and cutter stock. The model accounts for multiple fuel components
as well as limited diffusion rates and thermal decomposition rates within droplets by
the use of straight-line relationships for the saturation pressure of combustible fuel vapour at
the droplet surface as functions of droplet temperature. The energy required for decomposition
of heavy molecules is accounted for. Combustion is modelled using a timescale that is the
sum of a kinetic timescale based on a single-step reaction and a turbulent timescale based on
turbulent mixing rates. The ignition timescale is based on a simple three-equation model.
Cellwise ignition is employed. The heavy fuel oil model is applied to two different constant
volume chambers that are used to test ignition and combustion quality of marine heavy fuel
oil, using the computational fluid dynamics code StarCD version 3.2. Good agreement is shown
between trends in measured and computed data including ignition delay, burn rate and spatial
distribution of spray and flame parameters. The model is tested for two representative fuels,
one with good ignition and combustion properties and one poor. Essentially only two parameters
need to be changed to set the fuel quality. These are the ignition delay factor and the
activation energy for the high-temperature kinetics. Further tuning of the model to specific
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    <h1 class="ep_tm_pagetitle">Computational fluid dynamics modelling of residual fuel oil combustion in the context of marine diesel engines</h1>
    <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Goldsworthy, L.</span> (2006) <xhtml:em>Computational fluid dynamics modelling of residual fuel oil combustion in the context of marine diesel engines.</xhtml:em> International Journal of Engine Research, 7 (2). pp. 181-199. ISSN 1468-0874</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2558/1/47110_IJER_2006.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2558/1/47110_IJER_2006.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />2117Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="3366" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1243/146808705X30620">http://dx.doi.org/10.1243/146808705X30620</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">A simplified model is presented for vaporization and combustion of heavy residual&#13;
based fuel oil in high-pressure sprays, in the context of marine diesel engines. The fuel is&#13;
considered as a mix of residual base and cutter stock. The model accounts for multiple fuel components&#13;
as well as limited diffusion rates and thermal decomposition rates within droplets by&#13;
the use of straight-line relationships for the saturation pressure of combustible fuel vapour at&#13;
the droplet surface as functions of droplet temperature. The energy required for decomposition&#13;
of heavy molecules is accounted for. Combustion is modelled using a timescale that is the&#13;
sum of a kinetic timescale based on a single-step reaction and a turbulent timescale based on&#13;
turbulent mixing rates. The ignition timescale is based on a simple three-equation model.&#13;
Cellwise ignition is employed. The heavy fuel oil model is applied to two different constant&#13;
volume chambers that are used to test ignition and combustion quality of marine heavy fuel&#13;
oil, using the computational fluid dynamics code StarCD version 3.2. Good agreement is shown&#13;
between trends in measured and computed data including ignition delay, burn rate and spatial&#13;
distribution of spray and flame parameters. The model is tested for two representative fuels,&#13;
one with good ignition and combustion properties and one poor. Essentially only two parameters&#13;
need to be changed to set the fuel quality. These are the ignition delay factor and the&#13;
activation energy for the high-temperature kinetics. Further tuning of the model to specific&#13;
fuels is possible by modifying the saturation temperature relationships.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">heavy residual fuel oil, droplet vaporization and decomposition model, ignition&#13;
and combustion quality, multiple fuel components, marine diesel engines, CFD</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/290000.html">290000 Engineering and Technology</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2558</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Scholarly Publications Librarian</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">30 Nov 2007 10:30</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2558;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=2558">item control page</a></p>
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