@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} } @inproceedings{RodriguezHenriquezKeramiotisVourliotakisetal., author = {Rodriguez Henriquez, Jose Juan and Keramiotis, Christos and Vourliotakis, George and Mauß, Fabian and Founti, Maria}, title = {An emission characterization study on a model flame fuelled with natural gas and commercial grade propane}, series = {Proceedings, The MCAA Poster Session - ESOF 2016, EuroScience Open Forum - Manchester, United Kingdom, 24-27 July 2016}, booktitle = {Proceedings, The MCAA Poster Session - ESOF 2016, EuroScience Open Forum - Manchester, United Kingdom, 24-27 July 2016}, editor = {Krstić, Snežana and Cunningham, Paul}, publisher = {MCAA}, address = {Brussels}, isbn = {978-2-9601724-2-3}, pages = {27 -- 28}, language = {en} } @misc{NetzerSeidelPasternaketal., author = {Netzer, Corinna and Seidel, Lars and Pasternak, Michal and Klauer, Christian and Perlman, Cathleen and Ravet, Fr{\´e}d{\´e}ric and Mauß, Fabian}, title = {Engine Knock Prediction and Evaluation Based on Detonation Theory Using a Quasi-Dimensional Stochastic Reactor Mode}, series = {SAE technical paper}, journal = {SAE technical paper}, number = {2017-01-0538}, issn = {0096-5170}, doi = {10.4271/2017-01-0538}, pages = {11 Seiten}, language = {en} } @misc{MatriscianoFrankenPerlmanetal., author = {Matrisciano, Andrea and Franken, Tim and Perlman, Cathleen and Borg, Anders and Lehtiniemi, Harry and Mauß, Fabian}, title = {Development of a Computationally Efficient Progress Variable Approach for a Direct Injection Stochastic Reactor Model}, series = {SAE technical papers}, journal = {SAE technical papers}, number = {2017-01-0512}, issn = {0148-7191}, doi = {10.4271/2017-01-0512}, pages = {18 Seiten}, language = {en} } @misc{AslanjanKlauerPerlmanetal., author = {Aslanjan, Jana and Klauer, Christian and Perlman, Cathleen and G{\"u}nther, Vivien and Mauß, Fabian}, title = {Simulation of a Three-Way Catalyst Using Transient Single and Multi-Channel Models}, series = {SAE technical paper}, journal = {SAE technical paper}, number = {2017-01-0966}, issn = {0148-7191}, doi = {10.4271/2017-01-0966}, pages = {11 Seiten}, language = {en} } @misc{FrankenSommerhoffWillemsetal., author = {Franken, Tim and Sommerhoff, Arnd and Willems, Werner and Matrisciano, Andrea and Lehtiniemi, Harry and Borg, Anders and Netzer, Corinna and Mauß, Fabian}, title = {Advanced Predictive Diesel Combustion Simulation Using Turbulence Model and Stochastic Reactor Model}, series = {SAE technical paper}, journal = {SAE technical paper}, issn = {0148-7191}, doi = {10.4271/2017-01-0516}, language = {en} } @inproceedings{NetzerSeidelPasternaketal., author = {Netzer, Corinna and Seidel, Lars and Pasternak, Michal and Mauß, Fabian and Lehtiniemi, Harry and Perlman, Cathleen and Ravet, Fr{\´e}d{\´e}ric}, title = {3D CFD Engine Knock Predication and Evaluation Based on Detailed Chemistry and Detonation Theory}, series = {Motorische Verbrennung : aktuelle Probleme und moderne L{\"o}sungsans{\"a}tze, XIII. Tagung im Haus der Technik Ludwigsburg, 16.-17. M{\"a}rz 2017}, booktitle = {Motorische Verbrennung : aktuelle Probleme und moderne L{\"o}sungsans{\"a}tze, XIII. Tagung im Haus der Technik Ludwigsburg, 16.-17. M{\"a}rz 2017}, editor = {Leipertz, Alfred and Fr{\"o}ba, Andreas Paul}, publisher = {ESYTEC Energie- und Systemtechnik GmbH}, address = {Erlangen}, isbn = {978-3-945806-08-1}, language = {en} } @inproceedings{NetzerSeidelPasternaketal., author = {Netzer, Corinna and Seidel, Lars and Pasternak, Michal and Klauer, Christian and Perlman, Cathleen and Ravet, Fr{\´e}d{\´e}ric and Mauß, Fabian}, title = {Impact of Gasoline Octane Rating on Engine Knock using Detailed Chemistry and a Quasi-dimensional Stochastic Reaktior Model}, series = {Digital Proceedings of the 8th European Combustion Meeting (ECM 2017), Dubrovnik, Croatia}, booktitle = {Digital Proceedings of the 8th European Combustion Meeting (ECM 2017), Dubrovnik, Croatia}, pages = {493 -- 498}, language = {en} } @inproceedings{NetzerSeidelLehtiniemietal., author = {Netzer, Corinna and Seidel, Lars and Lehtiniemi, Harry and Ravet, Fr{\´e}d{\´e}ric and Mauß, Fabian}, title = {Efficient tracking of knock onset for a wide range of fuel surrogates}, series = {International Multidimensional Engine Modeling User's Group Meeting at the SAE Congress}, booktitle = {International Multidimensional Engine Modeling User's Group Meeting at the SAE Congress}, pages = {6}, language = {en} } @misc{PasternakMaussKlaueretal., author = {Pasternak, Michal and Mauß, Fabian and Klauer, Christian and Matrisciano, Andrea}, title = {Diesel engine performance mapping using a parametrized mixing time model}, series = {International Journal of Engine Research}, volume = {19}, journal = {International Journal of Engine Research}, number = {2}, issn = {2041-3149}, doi = {10.1177/1468087417718115}, pages = {202 -- 213}, language = {en} } @inproceedings{AslanjanKlauerGuentheretal., author = {Aslanjan, Jana and Klauer, Christian and G{\"u}nther, Vivien and Mauß, Fabian}, title = {On the Influence of Inlet Gas Variations and Gas Phase Chemistry in a Three-Way Catalyst}, series = {COMODIA - The Ninth International Conference on Modeling and Diagnostics for Advanced, July 25, 2017 - July 28, 2017}, booktitle = {COMODIA - The Ninth International Conference on Modeling and Diagnostics for Advanced, July 25, 2017 - July 28, 2017}, doi = {10.1299/jmsesdm.2017.9.A308}, abstract = {The conversion effects of a three-way catalyst are simulated in previous works using single and multiple representative channel approaches with detailed surface kinetic models. In addition, this article introduces global gas phase chemistry to the model. This allows reflecting ongoing reactions due to incomplete combustion products in low temperature regime. The 1D single-channel model representative for the catalyst is used here. Next to the comparison of the catalyst outlet emissions with and without gas phase chemistry, the transient temperature increase is simulated in order to model the catalysts light off temperature. Additionally, the transient inlet emissions are enhanced to show the influence of water and hydrogen on the modeling results. The heat transfer is modeled by wall heat losses to provide proper heat dissipation out of the catalyst. The modeling results show a good agreement to the experimental data with low computational cost.}, language = {en} } @inproceedings{FischerGuentherBergeretal., author = {Fischer, Michael and G{\"u}nther, Michael and Berger, Carsten and Troeger, Ralf and Pasternak, Michal and Mauß, Fabian}, title = {Suppressing Knocking by Using CleanEGR - Better Fuel Economy and Lower Raw Emissions Simultaneously}, series = {Knocking in Gasoline Engines, 5th International Conference, December 12-13, 2017, Berlin, Germany}, booktitle = {Knocking in Gasoline Engines, 5th International Conference, December 12-13, 2017, Berlin, Germany}, editor = {G{\"u}nther, Michael and Sens, Marc}, publisher = {Springer International Publishing}, address = {Cham}, isbn = {978-3-319-69760-4}, doi = {10.1007/978-3-319-69760-4_21}, pages = {384}, language = {en} } @inproceedings{PasternakNetzerMaussetal., author = {Pasternak, Michal and Netzer, Corinna and Mauß, Fabian and Fischer, Michael and Sens, Marc and Riess, Michael}, title = {Simulation of the Effects of Spark Timing and External EGR on Gasoline Combustion Under Knock-Limited Operation at High Speed and Load}, series = {Knocking in Gasoline Engines, 5th International Conference, December 12-13, 2017, Berlin, Germany}, booktitle = {Knocking in Gasoline Engines, 5th International Conference, December 12-13, 2017, Berlin, Germany}, editor = {G{\"u}nther, Michael and Sens, Marc}, publisher = {Springer International Publishing}, address = {Cham}, isbn = {978-3-319-69760-4}, doi = {10.1007/978-3-319-69760-4_8}, pages = {121 -- 142}, language = {en} } @inproceedings{AslanjanKlauerGuentheretal., author = {Aslanjan, Jana and Klauer, Christian and Guenther, Vivien and Mauß, Fabian}, title = {Simulation of a three-way catalyst using a transient multi-channel model}, series = {Digital Proceedings of the 8th European Combustion Meeting (ECM 2017), Dubrovnik, Croatia}, booktitle = {Digital Proceedings of the 8th European Combustion Meeting (ECM 2017), Dubrovnik, Croatia}, address = {Dubrovnik}, pages = {570 -- 574}, abstract = {The conversion effects of a three-way catalyst (TWC) are simulated in previous works using single-channel approaches and detailed kinetic models. In addition to the single-channel model multiple representative catalyst channels are used in this work to take heat transfer between the channels into account. Furthermore, different inlet temperature distributions are considered and tested. An experimental four-stroke engine setup with emission outputs fed into a TWC is used to validate the model. Furthermore, the temperature progress is simulated to reflect the catalyst's light off temperature. Heat conduction between the channels is modeled to provide proper heat dissipation during the catalytic process. A good agreement to the experimental data can be achieved with low computational cost.}, language = {en} } @misc{AslanjanKlauerGuentheretal., author = {Aslanjan, Jana and Klauer, Christian and G{\"u}nther, Vivien and Mauß, Fabian}, title = {Simulation of a three-way-catalyst using a transient multi-channel model}, pages = {S. 103}, abstract = {The importance to reduce automotive exhaust gas emissions is constantly increasing. Not only the country-specific laws are getting more stringent also the global increase of automobiles is requiring a responsible handling of the issue. The three-way-catalytic converter (TWC) is one of the most common catalysts for the engine exhaust gas after treatment. The reduction of CO, NO and unburned hydrocarbons is fulfilled via oxidation of carbon monoxide and hydrocarbons, and reduction of nitrogen oxides. These conversion effects were simulated in previous works using single channel approaches [e.g. Fr{\"o}jd/Mauss, SAE International 2011-01-1306] and detailed kinetic models [e.g Chatterjee et al., Faraday Discussions 119 (2001) 371-384 and Koop et al., Appl. Catal.B: Environmental 91 (2009), 47-58]. In this work multiple representative catalyst channels are used to take heat variations in between the catalyst into account. Each channel is split into a user given number of cells and each cell is treated like a perfectly stirred reactor (PSR). The simulation is validated against an experimental four-stroke engine setup with emission outputs fed into a TWC. Next to the emissions the transient temperature increase is simulated in order to model the catalyst light off temperature. The heat transfer is modelled by wall heat losses to provide a proper heat dissipation out of the catalyst. The simulation results show a good agreement to the experimental data with low computational cost.}, language = {en} } @misc{VanTreekRothSeideletal., author = {Van Treek, Lisa and Roth, Norbert and Seidel, Lars and Mauß, Fabian}, title = {Laminar burning velocities of rich ethylene / air flames}, abstract = {The laminar burning velocity SL of a given mixture of fuel and oxidizer is an important parameter to characterize premixed flames. SL is not only a fundamental parameter to calculate properties of turbulent flames, it is also an important target for the development of chemical kinetic mechanisms. Under fuel rich conditions it has relevance when simulating soot formation in burner stabilized flames. Many experiments on soot formation have been conducted in fuel-rich burner stabilized ethylene flames. Therefore an interest exists in experimental data for laminar burning velocity, in particular in fuel-rich ethylene flames. In the present work, ethylene / air flames were measured in the heat flux setup. Subsequently, the experimental data were compared against existing data and modelled using two kinetic models.}, language = {en} } @misc{HoyermannMaussOlzmannetal., author = {Hoyermann, Karlheinz and Mauß, Fabian and Olzmann, Matthias and Welz, Oliver and Zeuch, Thomas}, title = {Exploring the chemical kinetics of partially oxidized intermediates by combining experiments, theory, and kinetic modeling}, series = {Physical Chemistry Chemical Physics}, volume = {19}, journal = {Physical Chemistry Chemical Physics}, number = {28}, issn = {1463-9076}, doi = {10.1039/C7CP02759A}, pages = {18128 -- 18146}, abstract = {Partially oxidized intermediates play a central role in combustion and atmospheric chemistry. In this perspective, we focus on the chemical kinetics of alkoxy radicals, peroxy radicals, and Criegee intermediates, which are key species in both combustion and atmospheric environments. These reactive intermediates feature a broad spectrum of chemical diversity. Their reactivity is central to our understanding of how volatile organic compounds are degraded in the atmosphere and converted into secondary organic aerosol. Moreover, they sensitively determine ignition timing in internal combustion engines. The intention of this perspective article is to provide the reader with information about the general mechanisms of reactions initiated by addition of atomic and molecular oxygen to alkyl radicals and ozone to alkenes. We will focus on critical branching points in the …}, language = {en} } @misc{WeberLiLovasetal., author = {Weber, Kathrin and Li, T. and L{\o}v{\aa}s, Terese and Perlman, Cathleen and Seidel, Lars and Mauß, Fabian}, title = {Stochastic reactor modeling of biomass pyrolysis and gasification}, series = {Journal of analytical and applied pyrolysis}, volume = {124}, journal = {Journal of analytical and applied pyrolysis}, issn = {0165-2370}, doi = {10.1016/j.jaap.2017.01.003}, pages = {592 -- 601}, abstract = {Abstract In this paper, a partially stirred stochastic reactor model is presented as an alternative for the modeling of biomass pyrolysis and gasification. Instead of solving transport equations in all spatial dimensions as in CFD simulations, the description of state variables and mixing processes is based on a probability density function, making this approach computationally efficient. The virtual stochastic particles, an ensemble of flow elements consisting of porous solid biomass particles and surrounding gas, mimic the turbulent exchange of heat and mass in practical systems without the computationally expensive resolution of spatial dimensions. Each stochastic particle includes solid phase, pore gas and bulk gas interaction. The reactor model is coupled with a chemical mechanism for both surface and gas phase reactions. A Monte Carlo algorithm with operator splitting …}, language = {en} } @misc{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 = {Journal of Engineering for Gas Turbines and Power}, volume = {139}, journal = {Journal of Engineering for Gas Turbines and Power}, number = {9}, issn = {1528-8919}, doi = {10.1115/1.4036093}, pages = {091701-1 -- 091701-9}, 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 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 computational fluid dynamics 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} }