Investigation on reduced thermal models for simulating infrared images in fusion devices

7th European Thermal-Sciences Conference

Gerardin, J.^1 ; Aumeunier, M.-H.^2 ; Firdaouss, M.^2 ; Gardarein, J.-L.^1 ; Rigollet, F.^1

Aix-Marseille University, IUSTI UMR 7343 CNRS, Marseille, France^1

CEA/IRFM, Cadarache, France^2

关键词: 3-D finite element method;    Fusion facilities;    In-vessel components;    IR measurements;    Metallic walls;    Plasma scenario;    Reduced thermal model;    Surface temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/745/3/032019/pdf
DOI  :  10.1088/1742-6596/745/3/032019

来源: IOP

【 摘 要 】

In fusion facilities, the in-vessel wall receives high heat flux density up to 20 MW/m2. The monitoring of in-vessel components is usually ensured by infra-red (IR) thermography but with all-metallic walls, disturbance phenomenon as reflections may lead to inaccurate temperature estimates, potentially endangering machine safety. A full predictive photonic simulation is then used to assess accurately the IR measurements. This paper investigates some reduced thermal models (semi-infinite wall, thermal quadrupole) to predict the surface temperature from the particle loads on components for a given plasma scenario. The results are compared with a reference 3D Finite Element Method (Ansys Mechanical) and used as input for simulating IR images. The performances of reduced thermal models are analysed by comparing the resulting IR images.