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论文类型： 期刊论文

发表时间： 2017-07-01

发表刊物： FUSION ENGINEERING AND DESIGN

收录刊物： SCIE、EI、Scopus

卷号： 120

页面范围： 9-14

ISSN号： 0920-3796

关键字： Tungsten wires; W-Cu functionally graded material; First wall; Finite element simulation

摘要： A new model for a plasma-facing component with built-in tungsten wires and a W-Cu functionally graded layer is proposed and investigated. Using ABAQUS software on the basis of finite element method, the distributions of temperature and thermal stress in different first wall models under normal ITER operation condition are simulated. The result shows that W-Cu functionally graded layer instead of Cu layer can significantly reduce the high thermal stress at the interface of tungsten and copper. Inclusion of W wires further decreases the thermal stress in W-Cu functionally graded layer. A variety of comparative simulations are performed to achieve the optimal design of this model, especially the diameter and spacing of tungsten wires. (C) 2017 Elsevier B.V. All rights reserved.