Surface heat flux estimation with embedded fiber Bragg gratings measurements: Numerical study

被引：11

作者：

Gaspar, J. ^{[1
]}

Corre, Y. ^{[2
]}

Gardarein, J-L. ^{[1
]}

Firdaouss, M. ^{[2
]}

Guilhem, D. ^{[2
]}

Houry, M. ^{[2
]}

Laffont, G. ^{[3
]}

Le Niliot, C. ^{[1
]}

Missirlian, M. ^{[2
]}

Pocheau, C. ^{[2
]}

Rigollet, F. ^{[1
]}

机构：

[1] Aix Marseille Univ, IUSTI UMR CNRS 7343, 5 Rue Enrico Fermi, F-13453 Marseille, France

[2] CEA, IRFM, F-13108 Cadarache, St Paul Lez Dur, France

[3] CEA, LIST, F-91191 Gif Sur Yvette, France

来源：

NUCLEAR MATERIALS AND ENERGY | 2017年 / 12卷

关键词：

DIVERTOR; TOKAMAK; WALL; JET;

D O I：

10.1016/j.nme.2016.10.015

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

4 probes with Fiber Bragg Gratings (FBGs) will be integrated in Plasma Facing Component (PFC) of the WEST lower divertor in order to measure the bulk temperature distribution in the poloidal direction (11 locations equally spaced). A 2D nonlinear unsteady calculation combined with the Conjugate Gradient Method (CGM) and the adjoint state is used in order to estimate the space and time evolution of the surface heat flux based on temperature measurements. Synthetic measurements are generated assuming optical projection of the heat flux taking into account physical effects such as heat flux decay length (lambda q) and power spreading factor (S) in the private flux region and geometrical effects such as surface chamfering and round leading edges of the component. The inverse method is applied on different synthetic measurements in order to evaluate the ability of using FBG measurements to characterize the heat flux poloidal profile. (C) 2016 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license. (http://creativecommons.org/licenses/by-nc-nd/4.0/)

引用

页码：1077 / 1081

页数：5

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