Search Results - "Naumann, Clemens"

Measurements of Laminar Burning Velocities of Alternative Fuels: Application in Transport and Aerospace by Richter, Sandra, Braun-Unkhoff, Marina, Naumann, Clemens

“…The laminar burning velocity belongs to the fundamental combustion properties of fuels being a measure for their heat release, flame length, as well as…”
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An experimental and detailed chemical kinetic modeling study of hydrogen and syngas mixture oxidation at elevated pressures by Kéromnès, Alan, Metcalfe, Wayne K., Heufer, Karl A., Donohoe, Nicola, Das, Apurba K., Sung, Chih-Jen, Herzler, Jürgen, Naumann, Clemens, Griebel, Peter, Mathieu, Olivier, Krejci, Michael C., Petersen, Eric L., Pitz, William J., Curran, Henry J.

“…The oxidation of syngas mixtures was investigated experimentally and simulated with an updated chemical kinetic model. Ignition delay times for H2/CO/O2/N2/Ar…”
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Influence of Oxymethylene Ethers (OMEn) in Mixtures with a Diesel Surrogate by Richter, Sandra, Kathrotia, Trupti, Braun-Unkhoff, Marina, Naumann, Clemens, Köhler, Markus

“…Within this work the effects of blending oxymethylene ethers (OMEn) to a diesel surrogate (50 mol% n-dodecane, 30 mol% farnesane, and 20 mol%…”
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Unsteady Inherent Convective Mixing in Thermal-Energy-Storage Systems during Standby Periods by Henning Otto, Clemens Naumann, Christian Odenthal, Christian Cierpka

“…Recent studies on the flow phenomena in stratified thermal-energy-storage (TES) systems have shown that heat conduction from the hot upper fluid layer through…”
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“Green propellants” as a hydrazine substitute: experimental investigations of ethane/ethene-nitrous oxide mixtures and validation of detailed reaction mechanism by Janzer, Corina, Richter, Sandra, Naumann, Clemens, Methling, Torsten

“…Mixtures of hydrocarbons and nitrous oxide are known as green propellants and could replace the highly toxic hydrazine and hydrazine derivatives as rocket…”
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Effects of Compounds in Liquefied Methane on Rocket Engine Operation by van Schyndel, Jan, Goos, Elke, Naumann, Clemens, Hardi, Justin S., Oschwald, Michael

“…Methane (CH4) is a promising rocket fuel for various future space mission scenarios. It has advantages in terms of cost, performance, and environmental…”
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Combustion kinetics of alternative jet fuels, Part-II: Reaction model for fuel surrogate by Kathrotia, Trupti, Oßwald, Patrick, Naumann, Clemens, Richter, Sandra, Köhler, Markus

“…•A single reaction mechanism capable to model a spectrum of different fuels, includes variety of hydrocarbon molecules of varying degree of complexity and…”
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Dynamic characterization of Fiber Bragg Grating temperature sensors by Naumann, Clemens, Carlesi, Tommaso, Otto, Henning, Cierpka, Christian, Laboureur, Delphine

“…To reliably characterize fast dynamic heat transfer mechanisms, fast-response temperature sensors are crucial, including knowledge about the temporal response…”
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A study on fundamental combustion properties of oxymethylene ether-1, the primary reference fuel 90, and their blend: Experiments and modeling by Ngũgĩ, John Mbũrũ, Richter, Sandra, Braun-Unkhoff, Marina, Naumann, Clemens, Riedel, Uwe

“…Oxymethylene ethers (OMEn) are discussed as attractive carbon-reduced alternative fuels because they offer the potential to inhibit the formation of soot…”
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Experimental and modeling study of farnesane by Richter, Sandra, Kathrotia, Trupti, Naumann, Clemens, Kick, Thomas, Slavinskaya, Nadezhda, Braun-Unkhoff, Marina, Riedel, Uwe

“…•Combustion properties of farnesane, a potential biofuel for aviation, are studied.•Experiments on ignition delay time and laminar flame speed are…”
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Combustion study of a surrogate jet fuel by Liu, Yue-Xi, Richter, Sandra, Naumann, Clemens, Braun-Unkhoff, Marina, Tian, Zhen-Yu

“…The oxidation of a three-component surrogate jet fuel (consisting of n-dodecane 66.2%, n-propylbenzene 15.8% and 1,3,5-trimethylcyclohexane 18.0%, in mol) was…”
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Combustion kinetics of alternative fuels, Part-IV: Extending reaction mechanism “DLR Concise” to include oxygenates components by Kathrotia, Trupti, Bierkandt, Thomas, Gaiser, Nina, Richter, Sandra, Lindner, Fabian, Jacobs, Sascha, Naumann, Clemens, Methling, Torsten, Oßwald, Patrick, Köhler, Markus

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Generation of hybrid chemistry fuel models by optimization methods by Methling, Torsten, Kathrotia, Trupti, Zinsmeister, Julia, Richter, Sandra, Melder, Jens, Naumann, Clemens, Oßwald, Patrick, Köhler, Markus

“…The development of the hybrid chemistry (HyChem) methodology for the chemical kinetic modeling of real fuel combustion has introduced new possibilities for the…”
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Kinetics of Ethylene Glycol: The first validated reaction scheme and first measurements of ignition delay times and speciation data by Kathrotia, Trupti, Naumann, Clemens, Oßwald, Patrick, Köhler, Markus, Riedel, Uwe

“…The reaction kinetics of Ethylene Glycol (EG) is studied, due to its similarity in chemical composition and physical properties, as a model fuel for pyrolysis…”
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A combined experimental and modeling study of combustion properties of an isoparaffinic alcohol-to-jet fuel by Richter, Sandra, Kukkadapu, Goutham, Westbrook, Charles K., Braun-Unkhoff, Marina, Naumann, Clemens, Köhler, Markus, Riedel, Uwe

“…This work presents an investigation of fundamental combustion properties, specifically laminar burning velocity and ignition delay time, of an Alcohol-to-Jet…”
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Soot formation of renewable gasoline: From fuel chemistry to particulate emissions from engines by Zinsmeister, Julia, Storch, Michael, Melder, Jens, Richter, Sandra, Gaiser, Nina, Schlichting, Samuel, Naumann, Clemens, Schünemann, Erik, Aigner, Manfred, Oßwald, Patrick, Köhler, Markus

“…[Display omitted] •The sooting propensity of gasoline fuels was examined using different soot indices.•Particle number emissions from a four-cylinder engine…”
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Experimental and detailed kinetic model for the oxidation of a Gas to Liquid (GtL) jet fuel by Dagaut, Philippe, Karsenty, Florent, Dayma, Guillaume, Diévart, Pascal, Hadj-Ali, Kamal, Mzé-Ahmed, Amir, Braun-Unkhoff, Marina, Herzler, Jürgen, Kathrotia, Trupti, Kick, Thomas, Naumann, Clemens, Riedel, Uwe, Thomas, Levi

“…The kinetics of oxidation, ignition, and combustion of Gas-to-Liquid (GtL) Fischer–Tropsch Synthetic kerosene as well as of a selected GtL-surrogate were…”
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Paths to alternative fuels for aviation by Richter, Sandra, Braun-Unkhoff, Marina, Naumann, Clemens, Riedel, Uwe

“…Almost the complete amount of jet fuel available on the global market is produced from fossil crude oil being an exhaustible raw material. Furthermore its use…”
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An experimental investigation of furfural oxidation and the development of a comprehensive combustion model by Jin, Zhi-Hao, Yu, Dan, Liu, Yue-Xi, Tian, Zhen-Yu, Richter, Sandra, Braun-Unkhoff, Marina, Naumann, Clemens, Yang, Jiu-Zhong

“…The oxidation of furfural has been studied experimentally in a jet-stirred reactor (JSR) under fuel-lean (Φ = 0.4) and fuel-rich conditions (Φ = 2.0) in the…”
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Autoignition of hydrogen/nitrogen jets in vitiated air crossflows at different pressures by Fleck, Julia M., Griebel, Peter, Steinberg, Adam M., Arndt, Christoph M., Naumann, Clemens, Aigner, Manfred

“…Autoignition of hydrogen/nitrogen jets in crossflows of vitiated air has been experimentally studied at conditions relevant for gas turbine combustor…”
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