Title: Integration of Fluid Flow Modelling in the Vehicles Renault Development Process
text: This paper presents some of Renault's knowhow in modelling aerodynamic flows obtained in an operational environment on development configurations. The methodologies, developed from Navier Stokes equations averaged for turbulence, are used indeed to size openings and body elements, determine positions and optimize the geometry of the various air inlets and outlets, reduce pressure losses in the cab ventilation circuits, improve exchanger efficiency, optimize the underhood architecture devise encapsulation solutions, model windscreen de-icing, reduce aerodynamic noise and improve the understanding of certain physical processes associated with fouling.