Thermo-mechanical analysis of Wendelstein 7-X plasma facing components

•Thermo-mechanical analysis of HHF divertor module TM-H09 shows that it can withstand heat loads of 10MW/m2 in steady state when the supports were optimized accordingly.•FE calculations indicate that the tiles of baffles and heat shields can withstand stationary heat loads of 250kW/m2, but that the...

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Bibliographic Details
Published in:Fusion engineering and design 2013-10, Vol.88 (9-10), p.1727-1730
Main Authors: Peng, X.B., Bykov, V., Köppen, M., Ye, M.Y., Fellinger, J., Peacock, A., Smirnow, M., Boscary, J., Tereshchenko, A., Schauer, F.
Format: Article
Language:English
Subjects:
Baffles
Computer simulation
Design engineering
Finite element method
Heat shields
Mathematical analysis
Panels
Plasma facing components
Thermo-mechanical
W7-X
Walls
Wendelstein
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Summary:•Thermo-mechanical analysis of HHF divertor module TM-H09 shows that it can withstand heat loads of 10MW/m2 in steady state when the supports were optimized accordingly.•FE calculations indicate that the tiles of baffles and heat shields can withstand stationary heat loads of 250kW/m2, but that the pulse length of plasma operation must be limited depending on the number of full load (500kW/m2) cycles.•Gap requirements for wall panels during assembly were defined based on several FE calculations. The stellarator experiment Wendelstein 7-X (W7-X) is designed for stationary plasma operation (30min). Plasma facing components (PFCs) such as the divertor targets, baffles, heat shields and wall panels are being installed in the plasma vessel (PV) in order to protect it and other in-vessel components. The different PFCs will be exposed to different magnitude of heat loads in the range of 100kW/m2–10MW/m2 during plasma operation. An important issue concerning the design of these PFCs is the thermo-mechanical analysis to verify their suitability for the specified operation phases. A series of finite element (FE) simulations has been performed to achieve this goal. Previous studies focused on the test divertor unit (TDU) and high heat flux (HHF) target elements. The paper presents detailed FE thermo-mechanical analyses of a prototype HHF target module, baffles, heat shields and wall panels, as well as benchmarking against tests.
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2013.03.056