A versatile set-up to study plasma/microwave sources for liquid fuel ignition
| Autor: | Mikael Orain, Olivier Rouzaud, Jérôme Sokoloff, Olivier Pascal, Beatrice Fragge |
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| Přispěvatelé: | ONERA / DMPE, Université de Toulouse [Toulouse], ONERA-PRES Université de Toulouse, Groupe de Recherche en Electromagnétisme (LAPLACE-GRE), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, ONERA / DMPE, Université de Toulouse [Mauzac] |
| Rok vydání: | 2020 |
| Předmět: |
Waveguide (electromagnetism)
Materials science 020209 energy Nuclear engineering Microwave Plasma 02 engineering and technology 7. Clean energy Liquid fuel law.invention Physics::Plasma Physics law 0202 electrical engineering electronic engineering information engineering Physics::Chemical Physics Instrumentation [PHYS]Physics [physics] Atmospheric pressure [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment [SPI.PLASMA]Engineering Sciences [physics]/Plasmas Plasma 021001 nanoscience & nanotechnology Condensed Matter Physics Electronic Optical and Magnetic Materials Ignition system Minimum ignition energy Droplet Stream Combustion chamber 0210 nano-technology Microwave Fuel Ignition |
| Zdroj: | European Physical Journal: Applied Physics European Physical Journal: Applied Physics, EDP Sciences, 2020, 92 (3), pp.30903. ⟨10.1051/epjap/2020200228⟩ |
| ISSN: | 1286-0050 1286-0042 |
| DOI: | 10.1051/epjap/2020200228 |
| Popis: | International audience; Motivated by the high demand for an alternative, more reliable, high energy ignition source to facilitate the re-ignition of lean-burn combustion chambers which are necessary to reduce pollutant emissions, a new set-up has been designed to study plasma/microwave sources. The use of a waveguide-based resonant cavity leads to very low power plasma ignition. An example in this paper shows that a plasma at atmospheric pressure can be maintained with less than 2 W input power. Such a performance is possible using the large variety of possible adjustments (resonance frequency, different kind of initiators, etc.) that this versatile set-up offers. To illustrate the wide range of possible studies, another example is given and discussed : minimum ignition energy for an ethanol droplet stream with aluminum and stainless steel initiators. The results show that the initiator material and its surface quality have an influence on the minimum ignition energy, especially for large gaps. Depending on the gap size we can get down to under 10 W entering the cavity to ignite the droplet stream. |
| Databáze: | OpenAIRE |
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