ABSTRACT
Abstract . The research branch of EDF (French utilities) has been working since 1982 on NjS, a 3D finite element code for simulating turbulent incompressible flows [1 ] which has many applications nowadays dealing with internal flows [1 ] , thermal hydraulics [2] and turbomachinery [3] . The size of these applications is larger and larger : calculations until 350 000 nodes are on progress (around 2 000 000 unknowns) . To achieve so large applications , an important work has been done on the choice of efficient algorithms and on their implementation in order to reduce CPU time and memory allocation. The paper presents the central algorithm of the code, focusing on the treatment of turbulence modelling and on a recent industrial application.
