Miniaturized heat flux sensor for high enthalpy plasma flow characterization
| Autor: | Jean-Luc Battaglia, J. L. Gardarein, Stefan Löhle, Bruno van Ootegem, Jean-Pierre Lasserre, Pierre Jullien, Jacques Couzi |
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| Přispěvatelé: | Institut universitaire des systèmes thermiques industriels (IUSTI), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Transferts, écoulements, fluides, énergétique (TREFLE), Université Sciences et Technologies - Bordeaux 1-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Centre National de la Recherche Scientifique (CNRS), Forestal Mininco S.A., Inconnu, Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
[PHYS]Physics [physics]
Materials science Astrophysics::High Energy Astrophysical Phenomena 020209 energy Applied Mathematics Heat flux sensor General Engineering Thermodynamics 02 engineering and technology Mechanics Plasma 01 natural sciences 010305 fluids & plasmas Computer Science Applications Cross section (physics) Heat flux 13. Climate action Thermocouple 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Calibration Impulse response Wind tunnel |
| Zdroj: | Inverse Problems in Science and Engineering Inverse Problems in Science and Engineering, Taylor & Francis, 2013, 21 (4), pp.605-618. ⟨10.1080/17415977.2012.712525⟩ Inverse Problems in Science and Engineering, 2013, 21 (4), pp.605-618. ⟨10.1080/17415977.2012.712525⟩ |
| ISSN: | 1741-5977 1741-5985 |
| DOI: | 10.1080/17415977.2012.712525⟩ |
| Popis: | International audience; An improved miniaturized heat flux sensor is presented aiming at measuring extreme heat fluxes of plasma wind tunnel flows. The sensor concept is based on an in-depth thermocouple measurement with a miniaturized design and an advanced calibration approach. Moreover, a better spatial estimation of the heat flux profile along the flow cross section is realized with this improved small sensor design. Based on the linearity assumption, the heat flux is determined using the impulse response of the sensor relating the heat flux to the temperature of the embedded thermocouple. The non-integer system identification (NISI) procedure is applied that allows a calculation of the impulse response from transient calibration measurements with a known heat flux of a laser source. The results show that the new sensor leads to radially highly resolved heat flux measurement for a flow with only a few centimetres in diameter, the so far not understood non-symmetric heat flux profiles do not occur with the new sensor design. It is shown that this former effect is not a physical effect of the flow, but a drawback of the classical sensor design. |
| Databáze: | OpenAIRE |
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