CFD-simulation of thermalhydraulic benchmark v1000ct –2

CFD pre-calculations have been performed for the themalhydraulic benchmark V1000CT-2.
The numerical grid model was generated with the grid generator IC4C (ICEM-CFD) and the preprocessor CFX-5 and contains 4.7 Mio. tetrahedral elements.The output of the Best Practice Guidelines for optimizing the numerical studies in different reactor types was used in the numerical simulation. The agreement with the Kozloduy experiment at the core inlet is very good. The results show a clear sector formation of the affected loop at the downcomer, lower plenum and core inlet. The maximum local values of the relative temperature rise in the experiment amount 97.7% and in the calculation 97.4%.