Searched for: subject%3A%22Igniter%22
(1 - 17 of 17)
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Bao, Hesheng (author), Akargun, Hayri Yigit (author), Roekaerts, D.J.E.M. (author), Somers, Bart (author)
In this work, an extension of the Flamelet Generated Manifold (FGM) method is developed suitable for igniting turbulent flames. To create the FGM, the strongly stretched flamelet equations (SSFE) are solved. Whereas in the standard basic method a single representative flamelet strain rate is used, in the new method a range of strain rates is...
journal article 2023
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van Iersel, Coen (author)
The maritime sector faces major challenges to reduce its impact on global warming. The use of methanol as a fuel alternative is considered one of the more promising options to be implemented in a relatively short to medium time frame; based on the potential availability, emission reduction, energy density, potential to be synthetically produced,...
master thesis 2022
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Tambağ, Emre (author)
With hydrazine on the list of "substances of very high concern" by the European Chemicals Agency; hence alternative (storable) liquid rocket propellants are being developed which are less hazardous. During this feasibility study, experiments have been performed with a thermal ignition system in combination with hydrogen peroxide and ethanol as...
master thesis 2022
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Rittig, J. (author), Ritzert, Martin (author), Schweidtmann, A.M. (author), Winkler, Stefanie (author), Weber, J.M. (author), Morsch, Philipp (author), Heufer, Karl Alexander (author), Grohe, Martin (author), Mitsos, Alexander (author), Dahmen, Manuel (author)
Fuels with high-knock resistance enable modern spark-ignition engines to achieve high efficiency and thus low CO<sub>2</sub> emissions. Identification of molecules with desired autoignition properties indicated by a high research octane number and a high octane sensitivity is therefore of great practical relevance and can be supported by...
journal article 2022
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Doan, Nguyen Anh Khoa (author)
In this chapter, the research dedicated to moderate or intense low-oxygen dilution (MILD) combustion (also called flameless combustion) that relied on direct numerical simulations (DNS) is summarized. In particular, the various DNS carried out are detailed and three different configurations are considered: the autoigniting mixing layer...
book chapter 2022
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Molenberg, Ilse (author)
This thesis report is written as part of the Master Aerospace Engineering - Space Flight of the Delft University of Technology. The thesis was started in November 2020 and completed by June 30, 2021. The space industry is dominated by traditional highly toxic propellants, namely hydrazine. Due to its carcinogenic nature, REACH makes provisions...
master thesis 2021
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Dickert, Zoe (author)
Resonance ignition devices utilize the gas dynamic phenomenon to heat propellant gases to their auto-ignition temperature in order to initiate combustion. These devices are a promising alternative to current rocket engine ignition systems. In this thesis a python code was developed to generate a resonance ignition system design. The design was...
master thesis 2020
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Bosklopper, J.J. (author)
The maritime sector faces major challenges with increasing regulations from the International Maritime Organization (IMO) and national regulations for CO2, SOx and NOx. Innovative fuel types for maritime use are now under development by various stakeholders. Methanol shows considerable potential as one of the most promising for implementation in...
master thesis 2020
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Bertoncelj, Vesna (author)
In highly dynamic and vulnerable tidal systems such as the Wadden Sea, the importance of understanding natural processes and how they are hampered by anthropogenic pressure is highly demanding. Within these processes the sediment transport is one of the most challenging movements to be monitored. With this in mind, suspended particulate matter ...
student report 2019
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Ren, M. (author), Wang, Shuzhong (author), Yang, Chuang (author), Xu, Haitao (author), Guo, Yang (author), Roekaerts, D.J.E.M. (author)
This work reports an experimental study on supercritical water oxidation of quinoline. Moderate preheat temperature (420 °C–510 °C) and initial concentration (1 wt%–10 wt%) are selected to address the possibility of utilizing the heat released during the reaction, in order to realize high conversion rate at relatively low preheat temperature....
journal article 2019
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Akkermans, Christ (author)
The influence of using different chemistry model and different chemical kinetics schemes on modeling combustion inside a rocket engine igniter are investigated. An igniter for a LOX/CH4 rocket engine is designed and a CFD model is developed which is used to model the designed igniter. Verification and validation methods are discussed.<br/><br/>...
master thesis 2017
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Diegelmann, Felix (author), Hickel, S. (author), Adams, Nikolaus A. (author)
We investigate a reacting shock–bubble interaction through three-dimensional numerical simulations with detailed chemistry. The convex shape of the bubble focuses the shock and generates regions of high pressure and temperature, which are sufficient to ignite the diluted stoichiometric H<sub>2</sub>−O<sub>2</sub> gas mixture inside the bubble...
journal article 2017
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Taveau, J.R. (author), Going, J. E. (author), Hochgreb, S. (author), Lemkowitz, S.M. (author), Roekaerts, D.J.E.M. (author)
Dust explosibility is traditionally described by two parameters, namely the maximum explosion pressure, P<sub>max</sub>, and the deflagration index, K<sub>St</sub>, usually determined through testing in a closed, pressure-resistant spherical vessel, either 20 L or 1 m<sup>3</sup> in volume. These parameters constitute key variables in the...
journal article 2017
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Perminov, V. (author)
The most dangerous form of the forest fire is crown fire which causes the largest damage. Considering that, natural investigations of these problems are merely impossible, methods of mathematical modeling are urgent. Mathematical model of forest fire was based on an analysis of known experimental data and using concept and methods from reactive...
conference paper 2006
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Frolov, S.M. (author), Basevich, V.Y. (author), Smetanyuk, V.A. (author), Belyaev, A.A. (author), Pasman, H.J. (author)
Experiments on forced ignition of extremely fuel-rich n-butane-oxygen mixture with the equivalence ratio of 23 in the standard 20-liter spherical vessel at elevated initial pressure (4.1 bar) and temperature (500 K) reveal the nonmonotonic influence of the forced ignition delay time on the maximum explosion pressure and the maximum rate of...
conference paper 2006
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Cuenot, B. (author), Boileau, M. (author), Pascaud, S. (author), Mossa, J.B. (author), Riber, E. (author), Poinsot, T. (author), Bérat, C. (author)
Large Eddy Simulation (LES) is now recognized as an efficient numerical tool to predict gaseous combustion in industrial burners, and a number of examples of applications can be found in the literature. In these examples, the accuracy and the predictive capacity of LES are clearly demonstrated, even for unsteady phenomena. However most...
conference paper 2006
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Frolov, S.M. (author), Basevich, V.Y. (author), Smetanyuk, V.A. (author), Belyaev, A.A. (author), Pasman, H.J. (author)
Experiments on forced ignition of extremely fuel-rich n-butane-oxygen mixture with the equivalence ratio of 23 in the standard 20-liter spherical vessel at elevated initial pressure (4.1 bar) and temperature (500 K) reveal the nonmonotonic influence of the forced ignition delay time on the maximum explosion pressure and the maximum rate of...
conference paper 2006
Searched for: subject%3A%22Igniter%22
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