CTF and FLOCAL Thermal Hydraulics Validations and Verifications within a Multiscale and Multiphysics Software Development

Simulation codes allow one to reduce the high conservativism in nuclear reactor design improving reliability and sustainability associated with power. Full-core coupled physics at rod level are not provided by most simulation codes. This has led UK development of a multiscale multiphysics software focused on LWRS. In terms thermal hydraulics, suitable for this include subchannel code CTF hydraulics module FLOCAL nodal DYN3D. journal article, validations verifications within have been performed evaluate accuracy methodology available obtain both These proved that is highly accurate hydraulics. addition, these provides wide range crossflow turbulent mixing methods, while general simplified no-crossflow method as rest methods were only tested during its implementation into