• tanche
• ITER
• CFD
• analisi termiche
• vessel

This thesis is the result of the work done during a 6 months internship at ITER organization. In France they are working at the first fusion nuclear plant and I have had this amazing opportunity to work there as formative experience in order to complete my master degree in “nuclear engineering”.
As you can suppose, the facility that they are building involves a lot of different aspect and fields of the engineering cosmos. Of course a nuclear engineer is a central figure inside the pattern of experts that are involves on site, thanks to the knowledge of physics, engineering and normative requirements for nuclear facilities.
The thesis is organized in 11 different chapters. After a general description of ITER machine and components, we go into detail of the VVPSS that is safety system needed for the first plasma. A detailed description is provided in order to better understand the duties for which the tanks are design for.
Then there is the central topic of this thesis: a complete thermal analysis of tanks, both steady state and in transient situations. We focused in particular manner, on the accuracy of the model used in the software ANSYS fluent ® (mesh refining, physics of convection and radiation). A fire loads simulation is also performed to cover all the possible accidental events. The lasts chapters checked the normative requirements and the dilatation of the flange so to compare the data with the results coming from the tank constructor. The appendix, instead, is dedicated to the UDF used for the transient simulation.