Fine Nunerical Modelling of Thermohydraulic Phenomena in EdF PWR Reactors

Abstract

Over the last 20 years, EDF has developed a family of 2D and 3D industrial thennohydraulics software to solve problems encountered in existing PWR power plants and to design new reactors for the future. The equations used in the models are the averaged Navier-Stokes and energy equations. A brief description is given of the four main codes 'developed for single-phase and two-phase water-steam flows, some of which use finite differences or finite volumes methods, while others make use of finite elements methods. An example of application is given for each code.