@misc{GoosSickfeldMaussetal., author = {Goos, Elke and Sickfeld, Christina and Mauß, Fabian and Seidel, Lars and Ruscic, Branko and Burcat, Alexander and Zeuch, Thomas}, title = {Prompt NO formation in flames: The influence of NCN thermochemistry}, series = {Proceedings of the Combustion Institute}, volume = {Vol. 34}, journal = {Proceedings of the Combustion Institute}, issn = {1540-7489}, pages = {657 -- 666}, language = {en} } @misc{SeidelHoyermannMaussetal., author = {Seidel, Lars and Hoyermann, Karlheinz and Mauß, Fabian and Nothdurft, J{\"o}rg and Zeuch, Thomas}, title = {Pressure Dependent Product Formation in the Photochemically Initiated allyl + allyl reaction}, series = {Molecules}, volume = {18}, journal = {Molecules}, number = {11}, issn = {1420-3049}, pages = {13608 -- 13622}, language = {en} } @misc{PrieschingTatschlMaussetal., author = {Priesching, Peter and Tatschl, Reinhard and Mauß, Fabian and Saric, Fikret and Netzell, Karl and Bauer, W. and Schmidt, Markus L. and Leipertz, Alfred and Merola, Simona Silvia and Vaglieco, Bianca Maria}, title = {Soot Particle Size Distribution - a Joint Work for Kinetic Modelling and Experimental Investigations}, series = {SAE Technical Papers}, journal = {SAE Technical Papers}, number = {2005-24-053}, issn = {0148-7191}, pages = {1 -- 8}, abstract = {The intention of the presented work was to develop a new simulation tool that fits into a CFD (computational fluid dynamics) workflow and provides information about the soot particle size distribution. Additionally it was necessary to improve and use state-of-the-art measurement techniques in order to be able to gain more knowledge about the behavior of the soot particles and to validate the achieved simulation results. The work has been done as a joint research financed by the European Community under FP5.}, language = {en} } @inproceedings{SamuelssonGoganNetzelletal., author = {Samuelsson, K. and Gogan, Adina and Netzell, Karl and Lehtiniemi, Harry and Sund{\´e}n, Bengt and Mauß, Fabian}, title = {Modeling Diesel Engine Combustion and Pollutant Formation using a Stochastic Reactor Model Approach}, series = {Book of abstracts, Fifth Symposium Towards Clean Diesel Engines, 2 - 3 June 2005, Lund, Sweden}, booktitle = {Book of abstracts, Fifth Symposium Towards Clean Diesel Engines, 2 - 3 June 2005, Lund, Sweden}, publisher = {Univ., Lund Institute of Technology}, address = {Lund}, language = {en} } @inproceedings{LehtiniemiMaussBalthasaretal., author = {Lehtiniemi, Harry and Mauß, Fabian and Balthasar, M. and Magnusson, I.}, title = {Diesel Spray Ignition using a Progress Variable Approach}, series = {Book of abstracts, Fifth Symposium Towards Clean Diesel Engines, 2 - 3 June 2005, Lund, Sweden}, booktitle = {Book of abstracts, Fifth Symposium Towards Clean Diesel Engines, 2 - 3 June 2005, Lund, Sweden}, publisher = {Univ., Lund Institute of Technology}, address = {Lund}, language = {en} } @misc{TunerPasternakMaussetal., author = {Tuner, Martin and Pasternak, Michal and Mauß, Fabian and Bensler, H.}, title = {A PDF-Based Model for Full Cycle Simulation of Direct Injected Engines}, series = {SAE Technical Papers}, journal = {SAE Technical Papers}, number = {2008-01-1606}, issn = {0096-5170}, abstract = {In one-dimensional engine simulation programs the simulation of engine performance is mostly done by parameter fitting in order to match simulations with experimental data. The extensive fitting procedure is especially needed for emissions formation - CO, HC, NO, soot - simulations. An alternative to this approach is, to calculate the emissions based on detailed kinetic models. This however demands that the in-cylinder combustion-flow interaction can be modeled accurately, and that the CPU time needed for the model is still acceptable. PDF based stochastic reactor models offer one possible solution. They usually introduce only one (time dependent) parameter - the mixing time - to model the influence of flow on the chemistry. They offer the prediction of the heat release, together with all emission formation, if the optimum mixing time is given. Hence parameter fitting for a number of kinetic processes, that depend also on the in cylinder flow conditions is replaced by a single parameter fitting for the turbulent mixing time. In this work a PDF based model was implemented and coupled to the full cycle engine simulation tool, WAVE, and calculations were compared to engine experiments. Modeling results show good agreement with the experiments and show that PDF based Dl models can be used for fast and accurate simulation of Dl engine emissions and performance.}, language = {en} } @inproceedings{MarchalMoreacNetzelletal., author = {Marchal, C. and Mor{\´e}ac, Gladys and Netzell, Karl and Kasper, M. and Mauß, Fabian}, title = {The pressure dependence of soot particle size distribution functions}, series = {Proceedings - 3rd European Combustion Meeting, ECM 2007, Mediterranean Agronomic Institute of Chania, Crete, Greece, 11 - 13 April 2007}, booktitle = {Proceedings - 3rd European Combustion Meeting, ECM 2007, Mediterranean Agronomic Institute of Chania, Crete, Greece, 11 - 13 April 2007}, publisher = {The Combustion Institute, Greek Section}, address = {Chania}, language = {en} } @inproceedings{EbenezerMauss, author = {Ebenezer, N. and Mauß, Fabian}, title = {A robust and adaptive method for model chemical kinetics based on PRISM and ISAT philosophies}, series = {Proceedings - 3rd European Combustion Meeting, ECM 2007, Mediterranean Agronomic Institute of Chania, Crete, Greece, 11 - 13 April 2007}, booktitle = {Proceedings - 3rd European Combustion Meeting, ECM 2007, Mediterranean Agronomic Institute of Chania, Crete, Greece, 11 - 13 April 2007}, publisher = {The Combustion Institute, Greek Section}, address = {Chania}, language = {en} } @misc{WenzelGezginSteineretal., author = {Wenzel, Paul and Gezgin, A. and Steiner, R{\"u}diger and Kr{\"u}ger, Christian and Netzell, Karl and Lehtiniemi, Harry and Mauß, Fabian}, title = {Modeling of the soot particle size distribution in diesel engines}, series = {Conference proceedings, Conference on Thermo- and Fluid Dynamic Processes in Diesel Engines, September 12th - 15th 2006, Valencia, Spain}, journal = {Conference proceedings, Conference on Thermo- and Fluid Dynamic Processes in Diesel Engines, September 12th - 15th 2006, Valencia, Spain}, publisher = {Univ. Polit{\´e}cnica}, address = {Valencia}, isbn = {84-9705-982-4}, pages = {397 -- 410}, language = {en} } @inproceedings{ZeuchAhmedMoreacetal., author = {Zeuch, Thomas and Ahmed, Syed Sayeed and Mor{\´e}ac, Gladys and Mauß, Fabian}, title = {Modellierung der Verbrennung von n-Heptan mit detaillierten und reduzierten Reaktionsmechanismen {\"u}ber weite Temperatur- und Druckerbereiche}, series = {Hauptthema "Heterogene Katalyse: Br{\"u}cke zwischen Ideal- und Realsystemen" mit Industrie-Symposium "Br{\"u}ckenschl{\"a}ge zwischen idealen und realen Systemen in der heterogenen Katalyse"}, booktitle = {Hauptthema "Heterogene Katalyse: Br{\"u}cke zwischen Ideal- und Realsystemen" mit Industrie-Symposium "Br{\"u}ckenschl{\"a}ge zwischen idealen und realen Systemen in der heterogenen Katalyse"}, publisher = {Dt. Bunsen-Ges. f{\"u}r Physikalische Chemie}, address = {Frankfurt am Main}, language = {de} } @inproceedings{BenslerMontefrancescoWillandetal., author = {Bensler, H. and Montefrancesco, Emanuela and Willand, J. and Bo, T. and Risi, A. and Mauß, Fabian and Netzell, Karl}, title = {Prediction on non-premixed combustion and soot formation using and interactive flamelet approach}, series = {Conference proceedings, Conference on Thermo- and Fluid Dynamic Processes in Diesel Engines, September 12th - 15th 2006, Valencia, Spain}, booktitle = {Conference proceedings, Conference on Thermo- and Fluid Dynamic Processes in Diesel Engines, September 12th - 15th 2006, Valencia, Spain}, publisher = {Univ. Polit{\´e}cnica}, address = {Valencia}, isbn = {84-9705-982-4}, pages = {339 -- 352}, language = {en} } @incollection{MaussPeters, author = {Mauß, Fabian and Peters, Norbert}, title = {Reduced Kinetic Mechanisms for Premixed Methane-Air Flames}, series = {Reduced kinetic mechanisms for applications in combustion systems}, booktitle = {Reduced kinetic mechanisms for applications in combustion systems}, editor = {Peters, Norbert}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {3-540-56372-5}, pages = {58 -- 75}, language = {en} } @inproceedings{AhmedMoreacZeuchetal., author = {Ahmed, Syed Sayeed and Mor{\´e}ac, Gladys and Zeuch, Thomas and Mauß, Fabian}, title = {Reduced Mechanism for the Oxidation of the Mixtures of n-Heptane and iso-Octane}, series = {Proceedings of the European Combustion Meeting, Louvain-la-Neuve, Belgium, April 3 - 6, 2005}, booktitle = {Proceedings of the European Combustion Meeting, Louvain-la-Neuve, Belgium, April 3 - 6, 2005}, publisher = {Combustion Inst.}, address = {Louvain-la-Neuve}, language = {en} } @misc{BalthasarMaussWang, author = {Balthasar, M. and Mauß, Fabian and Wang, H.}, title = {A computational study of the thermal ionization of soot particles and its effect on their growth in laminar premixed flames}, series = {Combustion and Flame}, volume = {129}, journal = {Combustion and Flame}, number = {1-2}, issn = {1556-2921}, doi = {10.1016/S0010-2180(02)00344-9}, pages = {204 -- 216}, language = {en} } @inproceedings{MontorsiMaussBianchietal., author = {Montorsi, Luca and Mauß, Fabian and Bianchi, Gian Marco and Bhave, Amit and Kraft, Markus}, title = {Analysis of the HCCI Combustion of a Turbocharged Truck Engine Using a Stochastic Reactor Model}, series = {Design, application, performance and emissions of modern internal combustion engine systems and components, proceedings of the 2003 spring technical conference of the ASME Internal Combustion Engine Division, Salzburg, Austria, May 11 - 14, 2003}, booktitle = {Design, application, performance and emissions of modern internal combustion engine systems and components, proceedings of the 2003 spring technical conference of the ASME Internal Combustion Engine Division, Salzburg, Austria, May 11 - 14, 2003}, publisher = {ASME}, address = {New York, NY}, isbn = {0-7918-3678-9}, pages = {235 -- 246}, language = {en} } @inproceedings{LovasBlurockMauss, author = {Lovas, Terese and Blurock, Edward S. and Mauß, Fabian}, title = {Towards Dynamically Reduced Mechanisms based on Domain Splitting}, series = {Computational fluid and solid mechanics 2003, proceedings Second MIT Conference on Computational Fluid and Solid Mechanics, June 17 - 20, 2003}, booktitle = {Computational fluid and solid mechanics 2003, proceedings Second MIT Conference on Computational Fluid and Solid Mechanics, June 17 - 20, 2003}, editor = {Bathe, Klaus-J{\"u}rgen}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, isbn = {978-0-08-044046-0}, pages = {1430 -- 1433}, language = {en} } @inproceedings{BlurockLovasMauss, author = {Blurock, Edward S. and Lovas, Terese and Mauß, Fabian}, title = {Steady State Reduced Mechanisms based on Domain Splitting}, series = {Proceedings of the 19th International Conference on the Dynamics of Explosions and Reactive Systems, Hakone, July 27 - August 1, 2003}, booktitle = {Proceedings of the 19th International Conference on the Dynamics of Explosions and Reactive Systems, Hakone, July 27 - August 1, 2003}, address = {Hakone}, language = {en} } @inproceedings{LovasBlurockMauss, author = {Lovas, Terese and Blurock, Edward S. and Mauß, Fabian}, title = {Automatic Reduced Mechanisms based on Domain Splitting Methods}, series = {Proceedings of the European Combustion Meeting "ECM 2003", Orl{\´e}ans, France, October 25-28, 2003}, booktitle = {Proceedings of the European Combustion Meeting "ECM 2003", Orl{\´e}ans, France, October 25-28, 2003}, address = {Orl{\´e}ans}, language = {en} } @inproceedings{AhmedMoreacZeuchetal., author = {Ahmed, Syed Sayeed and Mor{\´e}ac, Gladys and Zeuch, Thomas and Mauß, Fabian}, title = {Efficient lumping technique for the automatic generation of n-heptane and iso-octane oxidation mechanism}, series = {227th ACS National meeting, Anaheim, CA, March 28-April 1, 2004}, booktitle = {227th ACS National meeting, Anaheim, CA, March 28-April 1, 2004}, publisher = {American Chemical Society}, address = {Washington, DC}, pages = {265 -- 266}, abstract = {The aim of this work is to generate a semi-detailed mechanism for the oxidation of n-heptane and iso-octane mixture with 241 species and 1905 reactions and to optimize it for the different engine operating conditions to cover the full range of temperature. A step wise efficient lumping strategy for different reaction types combine with necessity analysis has been used for the simplification and reduction of mechanism in order to make it faster and less complex in terms of both number of reactions and species. Its validation has been done against the shock tube experimental data from Fieweger et al. for both low and high temperature regions, lean and rich fuel conditions, a range of octane numbers and pressures from 13 bar to 40 bar. In addition, the mechanism was tested using a zero dimensional Homogenous Charge Compression Ignition engine model against experiments under a range of different octane numbers and initial temperatures.}, language = {en} } @inproceedings{BellancaMaussWang, author = {Bellanca, R. and Mauß, Fabian and Wang, H.}, title = {Automatic optimization of detailed kinetic mechanism for HCCI-engine simulation}, series = {The 227th ACS National Meeting, Anaheim, CA, March 28-April 1, 2004}, booktitle = {The 227th ACS National Meeting, Anaheim, CA, March 28-April 1, 2004}, publisher = {American Chemical Society}, address = {Washington, DC}, pages = {267 -- 268}, abstract = {In recent years detailed kinetic models have been developed and validated for both auto ignition and laminar combustion processes. The range of validity of these models is limited by the range of physical parameters covered by the available experimental data. Often, a re-optimization of the models is necessary. Optimization of reaction models has been automated in the past for example for the development of the GRI-Mech. In this work a similar procedure has been applied to optimize a gasoline fuel reference model as developed by Curran and Westbrook for HCCI engine cases. The HCCI-process was simulated using a compressed homogeneous reactor. Computations have been carried out on a PC in a graphical user interface environment. Experimental data were collected at Lund Institute of Technology on a Volvo engine with variable compression ratio and port injection mixes of iso-octane/n-heptane. Results show that, after optimization, HCCI experiments can be predicted for the given conditions.}, language = {en} } @inproceedings{GoganLehtiniemiMaussetal., author = {Gogan, Adina and Lehtiniemi, Harry and Mauß, Fabian and Sunden, Bengt}, title = {Stochastic Reactor Model for Auto-Ignition Calculation in Spark Ignition Engines}, series = {Proceedings of the European Combustion Meeting, Louvain-la-Neuve, Belgium, April 3 - 6, 2005}, booktitle = {Proceedings of the European Combustion Meeting, Louvain-la-Neuve, Belgium, April 3 - 6, 2005}, address = {Louvain-la-Neuve}, language = {en} } @inproceedings{MaussLehtiniemiNetzell, author = {Mauß, Fabian and Lehtiniemi, Harry and Netzell, Karl}, title = {Calculating soot in a turbulent jet diffision flame using the unsteady flamelet model}, series = {Proceedings of the European Combustion Meeting, Louvain-la-Neuve, Belgium, April 3 - 6, 2005}, booktitle = {Proceedings of the European Combustion Meeting, Louvain-la-Neuve, Belgium, April 3 - 6, 2005}, publisher = {Combustion Inst.}, address = {Louvain-la-Neuve}, language = {en} } @phdthesis{Mauss, author = {Mauß, Fabian}, title = {Entwicklung eines kinetischen Modells der Rußbildung mit schneller Polymerisation}, publisher = {Cuvillier Verlag}, address = {G{\"o}ttingen}, isbn = {3-89712-152-2}, language = {de} } @misc{PasternakNakovMaussetal., author = {Pasternak, Michal and Nakov, Galin and Mauß, Fabian and Lehtiniemi, Harry}, title = {Aspects of 0D and 3D Modeling of Soot Formation for Diesel Engines}, series = {Combustion Science and Technology}, volume = {186}, journal = {Combustion Science and Technology}, number = {10-11}, issn = {1563-521X}, doi = {10.1080/00102202.2014.935213}, pages = {1517 -- 1535}, language = {en} } @inproceedings{LehtiniemiBorgMauss, author = {Lehtiniemi, Harry and Borg, Andreas and Mauß, Fabian}, title = {Conditional Moment Closure with a Progress Variable Approach}, series = {COMODIA 2012, proceedings of the Eighth International Conference on Modeling and Diagnostics for Advanced Engine Systems, July 23 - 26, 2012, Fukuoka, Japan}, booktitle = {COMODIA 2012, proceedings of the Eighth International Conference on Modeling and Diagnostics for Advanced Engine Systems, July 23 - 26, 2012, Fukuoka, Japan}, publisher = {JSME}, address = {Tokyo}, pages = {548 -- 553}, language = {en} } @incollection{KennelMaussPeters, author = {Kennel, C. and Mauß, Fabian and Peters, Norbert}, title = {Reduced Kinetic Mechanisms for Premixed Propane-Air Flames}, series = {Reduced kinetic mechanisms for applications in combustion systems}, booktitle = {Reduced kinetic mechanisms for applications in combustion systems}, editor = {Peters, Norbert}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {3-540-56372-5}, pages = {123 -- 141}, language = {en} } @inproceedings{PrieschingSaricMaussetal., author = {Priesching, Peter and Saric, Fikret and Mauß, Fabian and Bauer, W. and Schmid, M. and Leipertz, Alfred}, title = {Partikelgr{\"o}ßenverteilung in Dieselmotoren - Detaillierte kinetische Berechnungen und Experimentelle Untersuchungen}, series = {Motorische Verbrennung, aktuelle Probleme und moderne L{\"o}sungsans{\"a}tze, VII. Tagung im Haus der Technik e.V., M{\"u}nchen, 15./16. M{\"a}rz 2005}, booktitle = {Motorische Verbrennung, aktuelle Probleme und moderne L{\"o}sungsans{\"a}tze, VII. Tagung im Haus der Technik e.V., M{\"u}nchen, 15./16. M{\"a}rz 2005}, editor = {Leipertz, Alfred}, publisher = {ESYTEC Energie- u. Systemtechnik}, address = {Erlangen}, isbn = {3-931901-36-X}, pages = {287 -- 298}, language = {de} } @inproceedings{PasternakMauss, author = {Pasternak, Michal and Mauß, Fabian}, title = {Simulation von Kraftstoffeffekten unter Dieselmotorischen Bedingungen mittels eines OD Kraftstoff-Versuchsstandes}, series = {Motorische Verbrennung, aktuelle Probleme und moderne L{\"o}sungsans{\"a}tze XI. Tagung im Haus der Technik e.V., Ludwigsburg, 14./15. M{\"a}rz 2013}, booktitle = {Motorische Verbrennung, aktuelle Probleme und moderne L{\"o}sungsans{\"a}tze XI. Tagung im Haus der Technik e.V., Ludwigsburg, 14./15. M{\"a}rz 2013}, editor = {Leipertz, Alfred}, publisher = {ESYTEC Energie- u. Systemtechnik}, address = {Erlangen}, isbn = {978-3-931901-87-5}, pages = {337 -- 346}, language = {de} } @inproceedings{LehtiniemiBorgMauss, author = {Lehtiniemi, Harry and Borg, Andreas and Mauß, Fabian}, title = {Konditionierte Momenten-Schließung mit einem Fortschritts-Variablen-Ansatz}, series = {Motorische Verbrennung, aktuelle Probleme und moderne L{\"o}sungsans{\"a}tze XI. Tagung im Haus der Technik e.V., Ludwigsburg, 14./15. M{\"a}rz 2013}, booktitle = {Motorische Verbrennung, aktuelle Probleme und moderne L{\"o}sungsans{\"a}tze XI. Tagung im Haus der Technik e.V., Ludwigsburg, 14./15. M{\"a}rz 2013}, editor = {Leipertz, Alfred}, publisher = {ESYTEC Energie- u. Systemtechnik}, address = {Erlangen}, isbn = {978-3-931901-87-5}, pages = {347 -- 358}, language = {de} } @incollection{LehtiniemiBorgMauss, author = {Lehtiniemi, Harry and Borg, Andreas and Mauß, Fabian}, title = {Conditional Moment Closure with a Progress Variable Approach}, series = {Engine processes}, booktitle = {Engine processes}, publisher = {Expert Verlag}, address = {Renningen}, isbn = {978-3-8169-3222-2}, pages = {100 -- 111}, language = {en} } @incollection{PasternakMauss, author = {Pasternak, Michal and Mauß, Fabian}, title = {Aspects of Diesel Engine In-Cylinder Processes Simulation Using 0D Stochastic Reactor Model}, series = {Engine processes}, booktitle = {Engine processes}, editor = {Sens, Marc and Baar, Roland}, publisher = {Expert Verlag}, address = {Renningen}, isbn = {978-3-8169-3222-2}, pages = {139}, language = {en} } @misc{PasternakMaussSensetal., author = {Pasternak, Michal and Mauß, Fabian and Sens, Marc and Riess, Michael and Benz, Andreas and Stapf, Karl Georg}, title = {Gasoline Engine Simulations Using a Zero-Dimensional Spark Ignition Stochastic Reactor Model and Three-Dimensional Computational Fluid Dynamics Engine Model}, series = {International Journal of Engine Research}, volume = {17}, journal = {International Journal of Engine Research}, number = {1}, issn = {1468-0874}, doi = {10.1177/1468087415599859}, pages = {76 -- 85}, abstract = {A simulation process for spark ignition gasoline engines is proposed. The process is based on a zero-dimensional spark ignition stochastic reactor model and three-dimensional computational fluid dynamics of the cold in-cylinder flow. The cold flow simulations are carried out to analyse changes in the turbulent kinetic energy and its dissipation. From this analysis, the volume-averaged turbulent mixing time can be estimated that is a main input parameter for the spark ignition stochastic reactor model. The spark ignition stochastic reactor model is used to simulate combustion progress and to analyse auto-ignition tendency in the end-gas zone based on the detailed reaction kinetics. The presented engineering process bridges the gap between three-dimensional and zero-dimensional models and is applicable to various engine concepts, such as, port-injected and direct injection engines, with single and multiple spark plug technology. The modelling enables predicting combustion effects and estimating the risk of knock occurrence at different operating points or new engine concepts for which limited experimental data are available.}, language = {en} } @misc{LocciColinPoitouetal., author = {Locci, Carlo and Colin, Olivier and Poitou, Damien and Mauß, Fabian}, title = {A tabulated, flamelet based no model for large eddy simulations of non premixed turbulent jets with enthalpy loss}, series = {Flow, Turbulence and Combustion}, volume = {94}, journal = {Flow, Turbulence and Combustion}, number = {4}, issn = {1386-6184}, doi = {10.1007/s10494-014-9591-z}, pages = {691 -- 729}, abstract = {Three LES models devoted to the NO prediction in under-adiabatic furnaces are evaluated in this paper: the NORA (NO relaxation Approach) model, based on the NO relaxation towards equilibrium, the linear model (LM) which employs a linear relation to rescale the NO consumption rate, and a new model, DF-NORA, in which the linear approximation of the LM is replaced by a tabulation of the reaction rate as a function of a NO progress variable. To generate this table, NO relaxation complex chemistry calculations are used like in NORA, but the homogeneous reactor is replaced by a steady laminar diffusion flame. These models are validated on Sandia Flame D and on the flameless case of Verissimo et al. (Ener. Fuel. 25, 2469-2480 ([32])). For both cases, NORA underpredicts the NO production due to its insensitivity to strain, while LM overpredicts NO by a factor 2 on Flame D and a factor 13 on the flameless case. DF-NORA presents the best prediction with a maximal underprediction of 30\% on Flame D and an over-prediction of 30\% on the final NO yield of the flameless case. The impact of a radiative source term is also assessed on Flame D, showing a local decrease of NO by less than 7\% compared to the adiabatic calculation for the DF-NORA model.}, language = {en} } @misc{SeidelMoshammerWangetal., author = {Seidel, Lars and Moshammer, Kai and Wang, Xiaoxiao and Zeuch, Thomas and Kohse-H{\"o}inghaus, Katharina and Mauß, Fabian}, title = {Comprehensive kinetic modeling and experimental study of a fuel-rich, premixed n-heptane flame}, series = {Combustion and Flame}, volume = {162}, journal = {Combustion and Flame}, number = {5}, issn = {0010-2180}, doi = {10.1016/j.combustflame.2015.01.002}, pages = {2045 -- 2058}, abstract = {An existing comprehensive kinetic hydrocarbon oxidation model has been augmented and revised for a detailed analysis of n-heptane flame chemistry. The analysis was enabled by experiments in which the detailed species composition in a fuel-rich flat premixed (ϕ=1.69) n-heptane flame at 40mbar has been studied by flame-sampling molecular-beam mass spectrometry using electron impact ionization. Mole fraction profiles of more than 80 different species have been measured and compared against the new detailed kinetic model consisting of 349 species and 3686 elementary reactions. For all major products and most of the minor intermediates, a good agreement of the modeling results with the experimentally-observed mole fraction profiles has been found. The presence of low- and intermediate-temperature chemistry close to the burner surface was consistently observed in the experiment and the simulation. With the same kinetic model, n-heptane auto-ignition timing, flame speeds and species composition in a jet-stirred reactor have been successfully simulated for a broad range of temperatures (500-2000K) and pressures (1-40bar). The comprehensive nature and wide applicability of the new model were further demonstrated by the examination of various target experiments for other C1 to C7 fuels.}, language = {en} } @misc{PasternakMaussXavieretal., author = {Pasternak, Michal and Mauß, Fabian and Xavier, Fabio and Riess, Michael and Sens, Marc and Benz, Andreas}, title = {0D/3D Simulations of Combustion in Gasoline Engines Operated with Multiple Spark Plug Technology}, series = {SAE Technical Papers}, journal = {SAE Technical Papers}, number = {2015-01-1243}, issn = {0148-7191}, doi = {10.4271/2015-01-1243}, abstract = {A simulation method is presented for the analysis of combustion in spark ignition (SI) engines operated at elevated exhaust gas recirculation (EGR) level and employing multiple spark plug technology. The modeling is based on a zero-dimensional (0D) stochastic reactor model for SI engines (SI-SRM). The model is built on a probability density function (PDF) approach for turbulent reactive flows that enables for detailed chemistry consideration. Calculations were carried out for one, two, and three spark plugs. Capability of the SI-SRM to simulate engines with multiple spark plug (multiple ignitions) systems has been verified by comparison to the results from a three-dimensional (3D) computational fluid dynamics (CFD) model. Numerical simulations were carried for part load operating points with 12.5\%, 20\%, and 25\% of EGR. At high load, the engine was operated at knock limit with 0\%, and 20\% of EGR and different inlet valve closure timing. The quasi-3D treatment of combustion chamber geometry and the spherical flame propagation by the 0D SI-SRM enabled for estimating the impact of number of spark plugs on the combustion progress and the risk of knock occurrence. Application of three spark plugs shortened significantly the combustion process. When the engine was operated at knock limit and with 20\% EGR, combustion duration was similar to that of engine operation without EGR and with one spark plug. Overall, the results presented demonstrate that this method has the potential to support early stages of engine development with limited experimental data available.}, language = {en} } @misc{MatriscianoBorgPerlmanetal., author = {Matrisciano, Andrea and Borg, Anders and Perlman, Cathleen and Lehtiniemi, Harry and Pasternak, Michal and Mauß, Fabian}, title = {Soot Source Term Tabulation Strategy for Diesel Engine Simulations with SRM}, series = {SAE Technical Papers}, journal = {SAE Technical Papers}, number = {2015-24-2400}, issn = {0148-7191}, doi = {10.4271/2015-24-2400}, pages = {1 -- 15}, abstract = {In this work a soot source term tabulation strategy for soot predictions under Diesel engine conditions within the zero-dimensional Direct Injection Stochastic Reactor Model (DI-SRM) framework is presented. The DI-SRM accounts for detailed chemistry, in-homogeneities in the combustion chamber and turbulence-chemistry interactions. The existing implementation [1] was extended with a framework facilitating the use of tabulated soot source terms. The implementation allows now for using soot source terms provided by an online chemistry calculation, and for the use of a pre-calculated flamelet soot source term library. Diesel engine calculations were performed using the same detailed kinetic soot model in both configurations. The chemical mechanism for n-heptane used in this work is taken from Zeuch et al. [2] and consists of 121 species and 973 reactions including PAH and thermal NO chemistry. The engine case presented in [1] is used also for this work. The case is a single-injection part-load passenger car Diesel engine with 27 \% EGR fueled with regular Diesel fuel. The two different approaches are analyzed and a detailed comparison is presented for the different soot processes globally and in the mixture fraction space. The contribution of the work presented in this paper is that a method which allows for a direct comparison of soot source terms - calculated online or retrieved from a flamelet table - without any change in the simulation setup has been developed within the SRM framework. It is a unique tool for model development. Our analysis supports our previous conclusion [1] that flamelet soot source terms libraries can be used for multi-dimensional modeling of soot formation in Diesel engines.}, language = {en} } @inproceedings{MatriscianoSeidelKlaueretal., author = {Matrisciano, Andrea and Seidel, Lars and Klauer, Christian and Lehtiniemi, Harry and Mauß, Fabian}, title = {An a priori thermodynamic data analysis based chemical lumping method for the reduction of large and multi-component chemical kinetic mechanisms}, series = {5th International Workshop on Model Reduction in Reacting Flows, L{\"u}bbenau, 2015}, booktitle = {5th International Workshop on Model Reduction in Reacting Flows, L{\"u}bbenau, 2015}, pages = {2}, abstract = {A chemical species lumping approach for reduction of large hydrocarbons and oxygenated fuels is presented. The methodology is based on an a priori analysis of the Gibbs free energy of the isomer species which is then used as main criteria for the evaluation of lumped group. Isomers with similar Gibbs free energy are lumped assuming they present equal concentrations when applied to standard reactor conditions. Unlike several lumping approaches found in literature, no calculation results from the primary mechanism have been employed prior to the application of our chemical lumping strategy.}, language = {en} } @inproceedings{SeidelKlauerPasternaketal., author = {Seidel, Lars and Klauer, Christian and Pasternak, Michal and Matrisciano, Andrea and Netzer, Corinna and Hilbig, Martin and Mauß, Fabian}, title = {Systematic Mechanism Reduction for Engine Applications}, series = {5th International Workshop on Model Reduction in Reacting Flows, L{\"u}bbenau, 2015}, booktitle = {5th International Workshop on Model Reduction in Reacting Flows, L{\"u}bbenau, 2015}, pages = {2}, abstract = {In this work we apply various concepts of mechanism reduction with a PDF based method for species profile conservation. The reduction process is kept time efficient by only using 0D and 1D reactors. To account for the expansion phase in internal combustion engines a stochastic engine tool is used to validate the reduction steps.}, language = {en} } @inproceedings{SeidelPerlmanFroejdetal., author = {Seidel, Lars and Perlman, Cathleen and Fr{\"o}jd, Karin and Klaus, Anna-Katharina and Laska, Timothy and Jalving, J. and Mauß, Fabian}, title = {CPU Efficient Modelling of Biomass Gasification Using a Stochastic Reactor Approach and Chemistry Guided Reduction}, series = {22nd European Biomass Conference and Exhibition}, booktitle = {22nd European Biomass Conference and Exhibition}, editor = {Seidel, Lars}, language = {en} } @misc{SeidelPerlmanFroejdetal., author = {Seidel, Lars and Perlman, Cathleen and Fr{\"o}jd, Karin and Klaus, Anna-Katharina and Laska, Timothy and Jalving, T. and Mauß, Fabian}, title = {CPU Efficient Modelling of Biomass Gasification Using a Stochastic Reactor Approach and Chemistry Guided Reduction}, pages = {1}, language = {en} } @inproceedings{RodriguezHenriquezSeidelMauss, author = {Rodriguez Henriquez, Jose Juan and Seidel, Lars and Mauß, Fabian}, title = {Plug Flow Reactor Set-up evaluation with methane decomposition at mild conditions and overpressure}, series = {Abstract book, 7th European Combustion Meeting (ECM), Budapest, Hungary, March 30-April 2}, booktitle = {Abstract book, 7th European Combustion Meeting (ECM), Budapest, Hungary, March 30-April 2}, isbn = {978-963-12-1257-0}, language = {en} } @inproceedings{MatriscianoSeidelKlaueretal., author = {Matrisciano, Andrea and Seidel, Lars and Klauer, Christian and Mauß, Fabian and Lehtiniemi, Harry}, title = {An a priori thermodynamic data analysis based on chemical lumping method for the reduction of large and multi-component chemical kinetic mechanisms}, series = {5th Annual Internation Workshop on Model Reduction in Reaction Flows (IWMRRF) L{\"u}bbenau, 28.06-01.07.2015, proceedings}, booktitle = {5th Annual Internation Workshop on Model Reduction in Reaction Flows (IWMRRF) L{\"u}bbenau, 28.06-01.07.2015, proceedings}, pages = {2}, language = {en} } @inproceedings{LehtiniemiBorgMauss, author = {Lehtiniemi, Harry and Borg, Andreas and Mauß, Fabian}, title = {Modeling of Spray Combustion under Diesel Engine Conditions}, series = {Proceedings of the 2nd Conference on Engine Processes, July 2-3, 2015, Berlin, Germany}, booktitle = {Proceedings of the 2nd Conference on Engine Processes, July 2-3, 2015, Berlin, Germany}, editor = {Sens, Marc and Baar, Roland}, publisher = {Universit{\"a}tsverlag der TU Berlin}, address = {Berlin}, isbn = {978-3-7983-2768-9}, pages = {217 -- 249}, language = {en} } @inproceedings{PasternakMaussMatrisciano, author = {Pasternak, Michal and Mauß, Fabian and Matrisciano, Andrea}, title = {Diesel Engine Performance Mapping Using Stochastic Reactor Model}, series = {Proceedings of the 2nd Conference on Engine Processes, July 2-3, 2015, Berlin, Germany}, booktitle = {Proceedings of the 2nd Conference on Engine Processes, July 2-3, 2015, Berlin, Germany}, editor = {Sens, Marc and Baar, Roland}, publisher = {Tech. Univ., Universit{\"a}tsverlag}, address = {Berlin}, isbn = {978-3-7983-2768-9}, pages = {217 -- 232}, language = {en} } @misc{MatriscianoPasternakWangetal., author = {Matrisciano, Andrea and Pasternak, Michal and Wang, Xiaoxiao and Antoshkiv, Oleksiy and Mauß, Fabian and Berg, Peter}, title = {On the Performance of Biodiesel Blends - Experimental Data and Simulations Using a Stochastic Fuel Test Bench}, series = {SAE Technical Papers}, journal = {SAE Technical Papers}, number = {2014-01-1115}, issn = {0148-7191}, doi = {10.4271/2014-01-1115}, pages = {1 -- 8}, language = {en} } @misc{SvenssonLiShamunetal., author = {Svensson, Erik and Li, Changle and Shamun, Sam and Johansson, Bengt and Tuner, Martin and Perlman, Cathleen and Lehtiniemi, Harry and Mauß, Fabian}, title = {Potential Levels of Soot, NOx , HC and CO for Methanol Combustion}, series = {SAE Technical Papers}, journal = {SAE Technical Papers}, number = {2016-01-0887}, issn = {0148-7191}, doi = {10.4271/2016-01-0887}, pages = {17 Seiten}, abstract = {Methanol is today considered a viable green fuel for combustion engines because of its low soot emissions and the possibility of it being produced in a CO2-neutral manner. Methanol as a fuel for combustion engines have attracted interest throughout history and much research was conducted during the oil crisis in the seventies. In the beginning of the eighties the oil prices began to decrease and interest in methanol declined. This paper presents the emission potential of methanol. T-Φ maps were constructed using a 0-D reactor with constant pressure, temperature and equivalence ratio to show the emission characteristics of methanol. These maps were compared with equivalent maps for diesel fuel. The maps were then complemented with engine simulations using a stochastic reactor model (SRM), which predicts end-gas emissions. The SRM was validated using experimental results from a truck engine running in Partially Premixed Combustion (PPC) mode at medium loads. The SRM was able to predict the combustion in terms of pressure trace and rate of heat release. The CO and NOx emissions were matched, however, the HC emissions were underestimated. Finally, the trajectories from the SRM simulations were superimposed on the T-Φ maps to investigate the in engine conditions. The T-Φ map analysis shows that emission of soot are non-existent, formaldehyde can be avoided and that emissions of methane are kept at, compared to diesel combustion, low levels, however CO and NOx levels are similar to diesel combustion. These results were confirmed for engine conditions by the SRM simulations and the engine experiments.}, language = {en} } @misc{FrankenMauss, author = {Franken, Tim and Mauß, Fabian}, title = {Development of Methodology for Predictive Diesel Combustion Simulation Using 0D Stochastic Reactor Model}, series = {SAE Technical Papers}, journal = {SAE Technical Papers}, number = {2016-01-0566}, issn = {0148-7191}, doi = {10.4271/2016-01-0566}, pages = {14 Seiten}, abstract = {Stringent exhaust emission limits and new vehicle test cycles require sophisticated operating strategies for future diesel engines. Therefore, a methodology for predictive combustion simulation, focused on multiple injection operating points is proposed in this paper. The model is designated for engine performance map simulations, to improve prediction of NOx, CO and HC emissions.The combustion process is calculated using a zero dimensional direct injection stochastic reactor model based on a probability density function approach. Further, the formation of exhaust emissions is described using a detailed reaction mechanism for n-heptane, which involves 56 Species and 206 reactions. The model includes the interaction between turbulence and chemistry effects by using a variable mixing time profile. Thus, one is able to capture the effects of mixture inhomogeneities on NOx, CO and HC emission formation.The mixing time model is parameterized using transfer functions for engine operating parameters, e.g., injection mass, injection duration, air fuel ratio, start of injection and speed. These functions are calibrated for nine operating points using multi objective simulated annealing optimization combined with fast running metamodels that speed up the optimization process. The calibrated transfer functions are validated for nine additional operating points. The results for the calibration and validation points show a good match of the combustion heat release rate. Especially the main injection heat release rate is well predicted by the model. The NOx and CO emissions reflect the experimental trends and are in close range to the measurements. Finally, the model is tested for triple injection operating points. The results match the measurements, which show the applicability of the stochastic reactor model in conjunction with the mixing time transfer functions for engine performance map simulations.}, language = {en} } @misc{LehtiniemiBorgMauss, author = {Lehtiniemi, Harry and Borg, Anders and Mauß, Fabian}, title = {Combustion Modeling of Diesel Sprays}, series = {SAE Technical Papers}, journal = {SAE Technical Papers}, number = {2016-01-0592}, issn = {0148-7191}, doi = {10.4271/2016-01-0592}, pages = {1 -- 11}, abstract = {Several models for ignition, combustion and emission formation under diesel engine conditions for multi-dimensional computational fluid dynamics have been proposed in the past. It has been recognized that the use of a reasonably detailed chemistry model improves the combustion and emission prediction especially under low temperature and high exhaust gas recirculation conditions.The coupling of the combustion chemistry and the turbulent flow can be achieved with different assumptions. In this paper we investigate a selection of n-heptane spray experiments published by the Engine Combustion Network (ECN spray H) with three different combustion models: well-stirred reactor model, transient interactive flamelet model and progress variable based conditional moment closure. All models cater for the use of detailed chemistry, while the turbulence-chemistry interaction modeling and the ability to consider local effects differ.The same chemical mechanism is used by all combustion models, which allows a comparison of ignition delay, flame stabilization and flame lift-off length between the experiments and the results from simulations using the different combustion models. The investigated parameters influence the predictions of computational fluid dynamics simulations of diesel engines. This study indicates that the most reasonable behavior with respect to ignition, flame stabilization and flame structure is predicted by the progress variable based conditional moment closure model.}, language = {en} } @inproceedings{MaussMatrisciano, author = {Mauß, Fabian and Matrisciano, Andrea}, title = {SRM in Engines: Performance and Emissions}, series = {3rd International Combustion Institute Summer School, June 19-23, Chania, Greece}, booktitle = {3rd International Combustion Institute Summer School, June 19-23, Chania, Greece}, language = {en} } @inproceedings{LeondeSyniawaNawdiyalSeideletal., author = {Leon de Syniawa, Larisa and Nawdiyal, A. and Seidel, Lars and Mauß, Fabian}, title = {Formation of C5 Species from iso-Butene}, series = {Book of Abstracts, SMARTCATs 2nd General Meeting \& Workshop on Smart Energy Carriers in Industry Lisbon, 14-16 November - 2016}, booktitle = {Book of Abstracts, SMARTCATs 2nd General Meeting \& Workshop on Smart Energy Carriers in Industry Lisbon, 14-16 November - 2016}, pages = {42 -- 43}, language = {en} } @inproceedings{MalliotakisBanyonCurranetal., author = {Malliotakis, Zisis and Banyon, Colin and Curran, Henry J. and Founti, Maria and Keramiotis, Christos and Vourliotakis, George and Koutmos, Panagiotis and Paterakis, George and Souflas, Konstantinos and Mauß, Fabian and Rodriguez Henriquez, Jose Juan and Skevis, George}, title = {A Comperative Study on the Oxidation of Gaseous and Liquid fuels in a Swirlstabilized Flame via Chemiluminescence Measurements}, series = {Book of abtracts, COST SMARTCATs 2nd General Meeting, Lisbon, 14-16th November}, booktitle = {Book of abtracts, COST SMARTCATs 2nd General Meeting, Lisbon, 14-16th November}, publisher = {Cost, European Cooperation in Science and Technology}, pages = {84 -- 85}, language = {en} } @inproceedings{MatriscianoBorgPerlmanetal., author = {Matrisciano, Andrea and Borg, Anders and Perlman, Cathleen and Pasternak, Michal and Seidel, Lars and Netzer, Corinna and Mauß, Fabian and Lehtiniemi, Harry}, title = {Simulation of DI-Diesel combustion using tabulated chemistry approach}, series = {1st Conference on Combustion Processes in Marine and Automotive Engines, 7th - 8th June 2016, Lund, Schweden}, booktitle = {1st Conference on Combustion Processes in Marine and Automotive Engines, 7th - 8th June 2016, Lund, Schweden}, pages = {44 -- 47}, language = {en} } @inproceedings{SeidelNetzerHilbigetal., author = {Seidel, Lars and Netzer, Corinna and Hilbig, Martin and Mauß, Fabian and Klauer, Christian and Pasternak, Michal and Matrisciano, Andrea}, title = {Systematic Reduction of Detailed Chemical Reaction Mechanisms for Engine Applications}, series = {ASME 2016 Internal Combustion Engine Division Fall Technical Conference Greenville, South Carolina, USA, October 9-12, 2016}, booktitle = {ASME 2016 Internal Combustion Engine Division Fall Technical Conference Greenville, South Carolina, USA, October 9-12, 2016}, publisher = {The American Society of Mechanical Engineers}, address = {New York, N.Y.}, isbn = {978-0-7918-5050-3}, pages = {12}, abstract = {In this work we apply a sequence of concepts for mechanism reduction on one reaction mechanism including novel quality control. We introduce a moment based accuracy rating method for species profiles. The concept is used for a necessity based mechanism reduction utilizing 0D reactors. Thereafter a stochastic reactor model (SRM) for internal combustion engines is applied to control the quality of the reduced reaction mechanism during the expansion phase of the engine. This phase is sensitive on engine out emissions, and is often not considered in mechanism reduction work. The proposed process allows to compile highly reduced reaction schemes for CFD application for internal combustion engine simulations. It is demonstrated that the resulting reduced mechanisms predict combustion and emission formation in engines with accuracies comparable to the original detailed scheme.}, language = {en} } @inproceedings{RodriguezHenriquezKeramiotisVourliotakisetal., author = {Rodriguez Henriquez, Jose Juan and Keramiotis, Christos and Vourliotakis, George and Mauß, Fabian and Founti, Maria}, title = {An Experimental Investigation of the Effect of Simulated EGR on Typical Gaseous Fuels Mixtures}, series = {1st Conference on Combustion Processes in Marine and Automotive Engines, 7th - 8th June 2016, Lund, Schweden}, booktitle = {1st Conference on Combustion Processes in Marine and Automotive Engines, 7th - 8th June 2016, Lund, Schweden}, pages = {18 -- 21}, language = {en} }