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Indexed by:期刊论文

Date of Publication:2011-01-01

Journal:FUSION ENGINEERING AND DESIGN

Included Journals:SCIE、EI

Volume:86

Issue:1

Page Number:45-50

ISSN No.:0920-3796

Key Words:First wall; Neutron heating; Plasma heating; Thermal stress

Abstract:To understand the combined effect of plasma heating and neutron heating loadings, the distributions of temperature, stress, and strain in different two-dimensional first wall panel models under normal ITER operation condition were simulated using finite element method. The maximum temperature occurs at the Be armor, and reaches 461 degrees C. High thermal stresses (in the range of 80-200 MPa) are found at the interface between the Be armor and the CuCrZr layer. The maximum thermal stress reaches 324 MPa in the SS316L cooling tube (20 mm diameter), exceeding its yield strength and resulting in a maximum strain of about 1.7% at the tube inner surface. These simulation results are useful for the design and operation of ITER. (C) 2010 Elsevier B.V. All rights reserved.