Hydro-thermal-mechanical analysis of thermal fatigue in a mixing tee

The final result of the thermo-hydro-mechanical link-up on application to the complex 3D geometry of the Civaux unit 1 case (which includes a mixing tee, bends and straight sections) enabled the observations made in this plant case to be highlighted and correlated. One of the originalities of this study is to carry out the overall analysis (thermal-hydraulic and thermo-mechanical) with a single computer code, the CAST3M code developed by the CEA.