C
Clemens Naumann
Researcher at German Aerospace Center
Publications - 76
Citations - 1620
Clemens Naumann is an academic researcher from German Aerospace Center. The author has contributed to research in topics: Combustion & Ignition system. The author has an hindex of 16, co-authored 69 publications receiving 1254 citations.
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Journal ArticleDOI
An experimental and detailed chemical kinetic modeling study of hydrogen and syngas mixture oxidation at elevated pressures
Alan Keromnes,Wayne K. Metcalfe,Karl Alexander Heufer,Nicola Donohoe,Apurba K. Das,Apurba K. Das,Chih-Jen Sung,Jürgen Herzler,Clemens Naumann,Peter Griebel,Olivier Mathieu,Michael Krejci,Eric L. Petersen,William J. Pitz,Henry J. Curran +14 more
TL;DR: In this paper, a detailed chemical kinetic mechanism for hydrogen and H2/CO (syngas) mixtures has been updated, rate constants have been adjusted to reflect new experimental information obtained at high pressures and new rate constant values recently published in the literature, and good agreement was observed.
Journal ArticleDOI
Shock-tube study of the ignition of methane/ethane/hydrogen mixtures with hydrogen contents from 0% to 100% at different pressures
Jürgen Herzler,Clemens Naumann +1 more
TL;DR: In this paper, the ignition delay times of diluted hydrogen/reference gas (92% methane, 8% ethane)/O2/Ar mixtures with hydrogen contents of 0, 40, 80% and 100% were determined in a high-pressure shock tube at equivalence ratios ϕ = 0.5 and 1.0 (dilution 1:5).
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Experimental and detailed kinetic model for the oxidation of a Gas to Liquid (GtL) jet fuel
P. Dagaut,Florent Karsenty,Guillaume Dayma,Pascal Diévart,K. Hadj-Ali,Amir Mzé-Ahmed,Marina Braun-Unkhoff,Jürgen Herzler,Trupti Kathrotia,Thomas Kick,Clemens Naumann,Uwe Riedel,Levi Thomas +12 more
TL;DR: In this article, the kinetics of gas-to-liquid (GtL) Fischer-Tropsch Synthetic kerosene as well as a selected GtL-surrogate were studied.
Journal ArticleDOI
An Experimental and Modeling Study of Burning Velocities of Possible Future Synthetic Jet Fuels
Thomas Kick,Julia Herbst,Trupti Kathrotia,Jens Marquetand,Marina Braun-Unkhoff,Clemens Naumann,Uwe Riedel +6 more
TL;DR: In this article, several alternative aviation fuels -existing and potential - are investigated by focusing on their heat release: Gas-to-Liquid (GtL), representing a Fischer-Tropsch Synthetic Paraffinic Kerosene (FT-SPK), a fully synthetic jet fuel (FSJF), and blends of GtL with 20% 1-hexanol or 50% naphthenic cut, respectively.
Journal ArticleDOI
Oxidation of a Coal-to-Liquid Synthetic Jet Fuel: Experimental and Chemical Kinetic Modeling Study
Amir Mzé-Ahmed,Philippe Dagaut,K. Hadj-Ali,Guillaume Dayma,Thomas Kick,Julia Herbst,Trupti Kathrotia,Marina Braun-Unkhoff,Jürgen Herzler,Clemens Naumann,Uwe Riedel +10 more
TL;DR: In this paper, the kinetics of oxidation of a coal-to-liquid (CtL) Fully Synthetic Jet Fuel (FSJF) were studied using three complementary experiments operating over a wide range of conditions: a jet stirred reactor (p = 10 bar), constant mean residence time of 1 s, over the temperature range 570-1070 K, and for equivalence ratios φ = 0.5, 1.0, and 2.0.