Conceptual Design Of Tungsten Monoblock Components For Kstar Divertor
2015 IEEE 26TH SYMPOSIUM ON FUSION ENGINEERING (SOFE)(2015)
摘要
For KSTAR divertor, tungsten (W) monoblock has been considered as plasma facing components. W monoblock components consist of three parts; pure W as the plasma facing material, oxygen-free high conductive copper (Cu-OFHC) as the interlayer and CuCrZr alloy as the tube. Finite element analysis (FEA) is performed by using ANSYS WORKBENCH. In this paper, the hydraulic thermo-mechanical analysis is performed to investigate the optimal design parameters and the expected fatigue lifetime under the operating conditions in KSTAR. The design parameters, such as W armour thickness, monoblock side thickness and Cu-OFHC interlayer thickness, were found out by performing the steady state thermo-hydraulic analysis and thermo-mechanical analysis. And then, the equivalent total strains calculated by the mechanical analysis were applied to the experimental fatigue curves for CuCrZr-IG using the optimized W monoblock shape.
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关键词
KSTAR divertor, Tungsten monoblock, Design parameter, Fatigue lifetime
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