| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ikeda, Yuji
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2023Compositive role of refractory element Mo in improving strength and ductility of face-centered-cubic complex concentrated alloyscitations
- 2023Interstitials in compositionally complex alloys
- 2022Effects of Cr/Ni ratio on physical properties of Cr-Mn-Fe-Co-Ni high-entropy alloyscitations
- 2022Schlieren imaging and spectroscopic approximation of the rotational–vibrational temperatures of a microwave discharge igniter with a resonating cavitycitations
- 2021Effects of cryogenic temperature on tensile and impact properties in a medium-entropy VCoNi alloycitations
- 2021Crystal structure and phase stability of Co2N : A combined first-principles and experimental studycitations
- 2021Crystal structure and phase stability of Co2N: a combined first-principles and experimental study
- 2021Chemically induced local lattice distortions versus structural phase transformations in compositionally complex alloyscitations
- 2021Structural, magnetic and catalytic properties of a new vacancy ordered perovskite type barium cobaltate BaCoO2.67citations
- 2020Correlation analysis of strongly fluctuating atomic volumes, charges, and stresses in body-centered cubic refractory high-entropy alloyscitations
- 2020Combined Al and C alloying enables mechanism-oriented design of multi-principal element alloys: Ab initio calculations and experimentscitations
- 2020Combined Al and C alloying enables mechanism-oriented design of multi-principal element alloyscitations
- 2020The University of Tokyo Atacama Observatory 6.5 m telescope: Development of the telescope and the control systemcitations
- 2020Role of magnetic ordering for the design of quinary TWIP-TRIP high entropy alloyscitations
- 2019Ultrastrong medium-entropy single-phase alloys designed via severe lattice distortioncitations
- 2019Ab initio phase stabilities and mechanical properties of multicomponent alloys: a comprehensive review for high entropy alloys and compositionally complex alloys
- 2019Invar effects in FeNiCo medium entropy alloys: From an Invar treasure map to alloy designcitations
- 2019Impact of interstitial C on phase stability and stacking-fault energy of the CrMnFeCoNi high-entropy alloycitations
- 2019Ab initio vibrational free energies including anharmonicity for multicomponent alloyscitations
- 2019Engineering atomic-level complexity in high-entropy and complex concentrated alloyscitations
- 2018Impact of chemical fluctuations on stacking fault energies of CrCoNi and CrMnFeCoNi high entropy alloys from first principlescitations
- 2017Phonon broadening in high entropy alloyscitations
Places of action
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article
Schlieren imaging and spectroscopic approximation of the rotational–vibrational temperatures of a microwave discharge igniter with a resonating cavity
Abstract
<jats:p>A microwave discharge igniter (MDI) with a resonating cavity was developed and optimized for practical applications in an internal combustion engine. In contrast to the typical microwave ignition, the resonating cavity of the MDI induces a discharge through dielectric resonance. Its source of microwave (MW) is a 2.45 GHz semiconductor oscillator that is capable of numerous oscillation patterns. To verify and demonstrate the optimum ignition performance and combustion, we varied the oscillation parameters (signal factors) of the MW to optimize the performance of the MDI using the Taguchi method. Plasma spectroscopy was used for ignition condition analysis. Two sets of microwave pulses, a first pulse followed by a second set of pulse bursts, were used to ignite a propane–air fuel. The flame kernel growth rate and O I species generation were used as the response outputs, which were obtained, respectively from Schlieren imaging and emission spectroscopy experiments. The extended pulse periods and higher MW pulse numbers of the second set of pulses improved the response outputs of the MDI. To further analyze the effect of MW oscillation patterns on plasma properties and performance, measurements were done on MW superimposed operation with the high-voltage ignition from spark plugs. The MW transmission on a typical spark plug enhanced the air plasma ignition. Higher input MW energy and more extended MW pulse widths results in increased spectral intensity and radical generation of OH, O, and <jats:inline-formula><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow class="MJX-TeXAtom-ORD"><mml:msub><mml:mrow class="MJX-TeXAtom-ORD"><mml:mi mathvariant="normal">N</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math></jats:inline-formula>. An inverse relation between the temperature and spectral intensity functions of the MW pulse width was observed, which was attributed to the cutoff density of the MW-enhanced plasma.</jats:p>