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Abstract

The design optimisation study of an innovative divertor concept for future experimental tokamak-type fusion devices is both an answer to the actual problems encountered in the multilayer divertor proposals and an illustration of a rational modelling philosophy and optimisation strategy for the development of a new divertor structure. Instead of using mechanical attachment or metallurgical bonding of the protective material to the heat sink as in most actual divertor concepts, the so-called "brush divertor" in this study uses an array of unidirectional fibres penetrating in both the protective armour and the underlying composite heat sink. The approach concentrates on the divertor performance, including both a description of its function from the theoretical point of view and an overview of the problems related to the materials' choice and evaluation. However, the approach followed in the numerical modelling and the judgement of the results is thought to be valid also for other applications. The spin-off of the study is in both the technological progress towards a feasible divertor solution, which introduces no additional physical uncertainties, and in the general area of the thermo-mechanical finite-element modelling on both macro- and micro-scale. The brush divertor itself embodies the use, and thus the modelling, of advanced materials such as tailor-made metal matrix composites and dispersion strengthened metals.

Additional information

Authors: JANSSENS W, Katholieke Universiteit Leuven, Department of Metallurgy and Applied Materials Science, Heverlee, Leuven (BE);CRUTZEN Y, JRC Ispra (IT);FARFALETTI-CASALI F, JRC Ispra (IT);MATERA R, JRC Ispra (IT)
Bibliographic Reference: EUR 13237 EN (1991) 262 pp., FS, ECU 20
Availability: (2)
ISBN: ISBN 92-826-2501-X
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