This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Modeling Iso-octane HCCI Using CFD with Multi-Zone Detailed Chemistry; Comparison to Detailed Speciation Data Over a Range of Lean Equivalence Ratios
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2008 by SAE International in United States
Annotation ability available
Multi-zone CFD simulations with detailed kinetics were used to model iso-octane HCCI experiments performed on a single-cylinder research engine. The modeling goals were to validate the method (multi-zone combustion modeling) and the reaction mechanism (LLNL 857 species iso-octane) by comparing model results to detailed exhaust speciation data, which was obtained with gas chromatography.
The model is compared to experiments run at 1200 RPM and 1.35 bar boost pressure over an equivalence ratio range from 0.08 to 0.28. Fuel was introduced far upstream to ensure fuel and air homogeneity prior to entering the 13.8:1 compression ratio, shallow-bowl combustion chamber of this 4-stroke engine. The CFD grid incorporated a very detailed representation of the crevices, including the top-land ring crevice and head-gasket crevice. The ring crevice is resolved all the way into the ring pocket volume. The detailed grid was required to capture regions where emission species are formed and retained.
Results show that combustion is well characterized, as demonstrated by good agreement between calculated and measured pressure traces. In addition, excellent quantitative agreement between the model and experiment is achieved for specific exhaust species components, such as unburned fuel, formaldehyde, and many other intermediate hydrocarbon species. Some calculated trace intermediate hydrocarbon species do not agree as well with measurements, highlighting areas needing further investigation for understanding fundamental chemistry processes in HCCI engines.
- Randy P. Hessel - University of Wisconsin-Madison
- David E. Foster - University of Wisconsin-Madison
- Salvador M. Aceves - Lawrence Livermore National Laboratory
- M. Lee Davisson - Lawrence Livermore National Laboratory
- Francisco Espinosa-Loza - Lawrence Livermore National Laboratory
- Daniel L. Flowers - Lawrence Livermore National Laboratory
- William J. Pitz - Lawrence Livermore National Laboratory
- John E. Dec - Sandia National Laboratories
- Magnus Sjöberg - Sandia National Laboratories
- Aristotelis Babajimopoulos - University of Michigan
CitationHessel, R., Foster, D., Aceves, S., Davisson, M. et al., "Modeling Iso-octane HCCI Using CFD with Multi-Zone Detailed Chemistry; Comparison to Detailed Speciation Data Over a Range of Lean Equivalence Ratios," SAE Technical Paper 2008-01-0047, 2008, https://doi.org/10.4271/2008-01-0047.
Homogeneous Charge Compression Ignition Engines, 2008
Number: SP-2182; Published: 2008-04-14
Number: SP-2182; Published: 2008-04-14
- Onishi, S. Jo, S.H. Shoda, K. Jo, P.D. Kato, S. “Active Thermo-Atmosphere Combustion (ATAC) - A New Combustion Process for Internal Combustion Engines,” SAE paper 790501 1979
- Noguchi, M. Tanaka, Y. Tanaka, T. Takeuchi, Y. “A Study on Gasoline Engine Combustion by Observation of Intermediate Reactive Products during Combustion,” SAE paper 790840 1979
- Warnatz, J. Maas, U. Dibble, R.W. Combustion 4th Springer-Verlag Berlin 2006
- Aceves, S.M. Flowers, D.L. Westbrook, C.K. Smith, J.R. Pitz, W.J. Dibble, R. Christensen, M. Johansson, B. “A Multi-Zone Model for Prediction of HCCI Combustion and Emissions,” SAE Paper 2000-01-0327 2000
- Babajimopoulos, A. Assanis, D.N. Flowers, D L Aceves, S.M. Hessel, R.P. “A fully coupled computational fluid dynamics and multi-zone model with detailed chemical kinetics for the simulation of premixed charge compression ignition engines” International Journal of Engine Research 6 5 497 2005
- Aceves, S.M. Flowers, D.L. Espinosa-Loza, F. Martinez-Frias, J. Dibble, R.W. Christensen, M. Johansson, B. Hessel, R.P. “Piston-Liner Crevice Geometry Effect on HCCI Combustion by Multi-Zone Analysis.” SAE Paper 2002-01-2869 2002
- Aceves, S.M. Flowers, D.L. Espinosa-Loza, F. Martinez-Frias, J. Dec, J.E. Sjöberg, M. Dibble, R.W. Hessel, R.P. “Spatial Analysis of Emissions Sources for HCCI Combustion at Low Loads Using a Multi-Zone Model,” SAE Paper 2004-01-1910 2004
- Dec, J.E, Davisson, M.L. Leif, R.N. Sjoberg, M. Hwang, W. “Detailed HCCI Exhaust Speciation and the Sources of Hydrocarbon and Oxygenated Hydrocarbon Emissions,” SAE Paper 2008-01-0053 2008
- Dec, J.E. Sjoberg, M. “A Parametric Study of HCCI Combustion - The Sources of Emissions at Low Loads and the Effects of GDI Fuel Injection,” SAE Paper 2003-01-0752 2003
- Amsden, A. A. “KIVA-3V: A Block-Structured KIVA Program for Engines with Vertical or Canted Valves” Los Alamos National Laboratory Report No. LA 13313-MS 1997
- Kee, R. J. Rupley, F. M. Miller, J. A. “CHEMKIN-II: A fortran chemical kinetics package for the analysis of gas-phase chemical kinetics,” Sandia Report SAND89-8009 1989
- Smith, G. P. Golden, D. M. Frenklach, M. Moriarty, N. W. Eiteneer, B. Goldenberg, M. Bowman, C. T. Hanson, R. K. Song, S. Gardiner, W. C. Lissianski, V. V. Qin, Z http://www.me.berkeley.edu/gri_mech/
- Curran, H. J. Gaffuri, P. Pitz, W. J. Westbrook, C. K. “A Comprehensive Modeling Study of iso-Octane Oxidation,” Combustion and Flame 129 253 280 2002
- Marinov, N. M. Pitz, W. J. Westbrook, C. K. Vinvitore, A. M. Castaldi, M. J. Senkan, S. M. “Aromatic and Polycyclic Aromatic Hydrocarbon Formation in a Laminar Premixed n-Butane Flame,” Combustion and Flame 113 192 213 1998
- Fischer, S. L. Dryer, F. L. Curran, H. J “The Reaction Kinetics of Dimethyl Ether. I: High-Temperature Pyrolysis and Oxidation in Flow Reactors,” Int. J. Chem. Kin. 32 713 740 2000
- Sjoberg, M. Dec, J.E. “An Investigation of the Relationship between Measured Intake Temperature, BDC Temperature, and Combustion Phasing for Premixed and DI HCCI Engines” SAE Paper 2004-01-1900 2004
- Han, Z. Reitz, R.D. “A Temperature Wall Function Formulation for Variable-Density Turbulent Flows with Application to Engine Convective Heat Transfer Modeling” International Journal of Heat and Mass Transfer 40. 3 613 625 1997