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Experimental and Numerical Investigation of Iso-Octane, Methanol and Ethanol Regarding Laminar Burning Velocity at Elevated Pressure and Temperature
Technical Paper
2009-01-1774
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The laminar burning velocity is one key parameter for the numerical simulation of gasoline engine combustion processes. In order to understand the effect of the laminar burning velocity of different fuel components on modern engine development it is of great interest to conduct experiments under high initial pressure and temperature. Initial conditions in this publication are a pressure of p = 10bar and a temperature of T = 373K.
Special focus has been laid on the common C1 and C2 alcohols, methanol and ethanol, which are frequently used for blending components in standard gasoline.
The experimental setup consists of a spherical closed pressurized combustion vessel with optical access. Schlieren measurements coupled with a high speed camera are used for image acquisition to track the expanding flame front. Finally, a post processing tool is used to extrapolate the measurements to zero stretch.
Experiments were done at different fuel-air ratios between Φ = 0.8 and up to Φ = 1.2. Test fuels were the pure component iso-octane, methanol and ethanol or mixtures iso-octane / methanol and iso-octane / ethanol with a maximum blend rate of 10% volliq regarding the alcohol.
Thereafter, numerical simulations using high temperature chemical models were undertaken to estimate the laminar burning velocity for a distinct amount of experimental test points.
Experimental results are discussed in detail and compared with the numerical simulations as well as references from literature.
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Beeckmann, J., Röhl, O., and Peters, N., "Experimental and Numerical Investigation of Iso-Octane, Methanol and Ethanol Regarding Laminar Burning Velocity at Elevated Pressure and Temperature," SAE Technical Paper 2009-01-1774, 2009, https://doi.org/10.4271/2009-01-1774.Also In
References
- Hyvönen J. J. Experimentelle und numerische Untersuchungen magerer Methan-Hochdruckverbrennung unter Mikrogravitation, Dissertation, RWTH Aachen University 2000
- Jerzembeck S. Peters N. Pepiot-Desjardins P. Pitsch H. Laminar burning velocities at high pressure for primary reference fuels and gasoline: Experimental and numerical investigation, Combustion and Flame 156 292 301 2009
- Menrad H. König A. Alkoholkraftstoffe Springer Verlag, Wien 1982
- Chemisch-physikalische Daten von Otto-und Dieselkraftstoffen, Forschungsbericht 409, DGMK 1993
- http://en.wikipedia.org/wiki/Heat_of_combustion
- Starikovskii A. Y. Plasma supported Combustion, Proceedings of the Combustion Institute, Volume 30 2405 2417 2005
- Otsu N. A threshold selection method from grey level histograms, IEEE Transactions on Systems Management and Cybernatics 9 62 69 1979
- Peters N. Turbulent Comustion, Cambridge University Press Cambridge 2000
- Bradley D. Hicks R. A. Lawes M. Sheppard C. G. W. Woolley R The Measurement of Laminar Burnng Velocities and Markstein Numbers for Iso-Octane-Air Mixtures and Iso-Octane-n-Heptane-Air Mixtures at Elevated Temperatures and Pressures in an Exlosion Bomb, Combustion and Flame 115 126 144 1998
- Clavin P. Williams F. A. Effects of molecular diffusion and of thermal expansion on the structure and dynamics of premixed flames in turbulent flows of large scale and low intensity, J. Fluid Mech 116 251 282 1982
- Pelce P. Clavin P. Influence of hydrodynamics and diffusion upon the stability limits of laminar premixed flames, J. Fluid Mech 124 219 237 1982
- Matalon M. Matkowsky B.J Flames as gasdynamic discontinuities, J. Fluid Mech 124 239 259 1982
- Williams F. A. Combustion theory, Addison-Wesley Menlo Park, CA 1985
- Jerzembeck S. Röhl O. Glawe C. Peters N. Thirty-Second Symposium (international) on Combustion, The Combustion Institute, Poster Presentation 2008
- Müller U. C. Bollig M. Peters N. Approximations for burning velocities and markstein numbers for lean hydrocarbon and methanol flames, Combustion and Flame 108 349 356 1997
- Röhl O. Jerzembeck S. Beeckmann J. Peters N. Numerical Investigation of Laminar Burning Velocities of High Octane Fuel Blends Containing Ethanol, SAE Paper 2009-01-0935 2009
- Curran H. J. Gaffuri P. Pitz W. J. Westbrook C. K. A comprehensive modelling study on iso-octane oxidation, Combustion and Flame 129 253 280 2002
- Marinov N. M. A detailed chemical kinetic model for high temperature ethanol oxidation, Int. J. Chem. Kinet 31 183 220 1999
- Jerzembeck S. Röhl O. Glawe C. Peters N. http://www.itv.rwth-aachen.de/fileadmin/downloadbereich/prf_ethanol.zip
- Peters N. Williams F. Asymptotic structure of stoichiometric methane-air flames, Combustion and Flame 68 833 840 1987
- Metghalchi M. Keck J. C. Burning velocities of mixtures of air with methanol, isooctane, and indolene at high pressure and temperature, Combustion and Flame 48 191 210 1982