With ANSYS Towards Fusion Power Generation

The ITER project is an unprecedented international collaboration in which scientists and engineers from Europe, Japan, Russia, USA, China, South Korea and in the near future India, are working together on the next step for the development of fusion. ITER’s mission is to demonstrate the scientific and technological feasibility of fusion energy for peaceful purposes and it will be the first fusion device to produce thermal energy at the level of an electricity-producing power plant. This fusion device will be built in Cadarache, France. The International Thermonuclear Experimental Reactor (ITER) is an experimental fusion reactor based on the tokamak concept in which superconducting coils, operating at 4K, are positioned around a toroidal vessel providing a magnetic configuration in which to create and maintain the conditions for controlled fusion reactions. The machine consists of complex and high-quality technological components such as the in-vessel components, like the divertor and blanket, and out-vessel components like the magnet system. The finite element program ANSYS is used by all participating parties in order to support the engineering design activities. The type of finite element analysis is diverse and ranges over; dynamic analyses, nonlinear thermal analysis, electro-magnetic analyses, and non-linear structural analyses. Extensive non-linear structural analyses have been performed to investigate several design options of the magnet system consisting of the toroidal field (TF), poloidal field (PF) and central solenoid (CS) magnet systems. For the analyses of the ITER Magnet systems, large complex 3-dimensional non-linear finite element models have been developed, as well as 2-dimensional local finite element models. Evaluation of the results has been mainly focused on acceptable static and cyclic stresses (for fatigue) in the magnet system during normal operating conditions and fault conditions [1]. This paper gives an overview of some of the studies performed and results obtained with several ANSYS FE-models [2], which support the design of the ITER magnet system as illustrated in Figure 1 – Present ITER Design.
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