Solving the infrared reflections contribution by inversion of synthetic diagnostics: First results on WEST
| Autor: | C. Talatizi, Albrecht Herrmann, Marie-Hélène Aumeunier, Christophe Le Niliot, Fabrice Rigollet, Mickael Le Bohec |
|---|---|
| Přispěvatelé: | Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut universitaire des systèmes thermiques industriels (IUSTI), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Max-Planck-Institut für Plasmaphysik [Garching] (IPP), European Project: 633053,H2020,EURATOM-Adhoc-2014-20,EUROfusion(2014) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Ray Tracing Monte Carlo
Infrared Monte Carlo method Inverse transform sampling Radiosity (computer graphics) 01 natural sciences 7. Clean energy 010305 fluids & plasmas [SPI]Engineering Sciences [physics] Optics 0103 physical sciences Emissivity General Materials Science [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] 010306 general physics reflections Civil and Structural Engineering Physics business.industry Mechanical Engineering Radiosity method Inversion (meteorology) Nuclear Energy and Engineering emissivity infrared thermography [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph] inverse problem Reflective surfaces Photonics business |
| Zdroj: | Fusion Engineering and Design Fusion Engineering and Design, 2021, 171, ⟨10.1016/j.fusengdes.2021.112570⟩ |
| ISSN: | 0920-3796 |
| DOI: | 10.1016/j.fusengdes.2021.112570⟩ |
| Popis: | International audience; Infrared (IR) diagnostics are used to measure plasma-facing components (PFC) surface temperature in fusion devices. However, the interpretation of such images is complex in all-reflective environments because of unknown emissivity and multiple reflections issues. In order to assess these challenges an iterative inversion method based on a fast photonic model, the radiosity method, has been developed. This method is applied to two different direct models based on different geometries, Sec-Tore and RADIOS, in order to estimate temperatures from experimental-like data simulated with a Monte Carlo ray-tracing code with diffuse reflective surfaces or specularly reflective surfaces. RADIOS allows retrieving temperature on colder targets (lower than 200°C) with errors of 33% and the peak temperatures with errors of 6%. |
| Databáze: | OpenAIRE |
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