Objective Objectives and content Computation Fluid Dynamics (CFD) has made a strong impact on the rationalisation and optimisation of the design process in various branches of industry. However, the aerodynamic design of road vehicles relies almost completely on expensive and elaborate wind tunnel testing, because industrial CFD codes are regarded as insufficiently reliable to reproduce the complex flow physics around and behind a vehicle. It has been generally recognised that the major weakness of the CFD codes are the turbulence models, which have been developed mainly with reference to simpler flows not pertinent to the vehicle aerodynamics. The goal of this project is to develop accurate and fast numerical prediction tools for the design and optimisation of road vehicles through the development, calibration and experimental verification of advanced turbulence models for external aerodynamics, in conjunction with advanced finite-volume numerical methods. In attaining this goal the project will focus on further development and refinement of the newest generation of turbulence models and their validation in selected real-life problems encountered in road-vehicle aerodynamics, which have so far not been successfully resolved: Separation on curved roof and rear window Flow around protrusions (mirrors) Wake/road interaction behind a vehicle Flow between rotating wheels and wheel arches The complexity of these phenomena requires substantial modification of the turbulence modelling approach, compared to the older generation of models, which are still in use in most industrial CFD codes. The new generation of turbulence models is expected to better capture the real physics by representing in exact manner several important mechanisms in turbulence dynamics. The models are based on the steady and transient Reynolds-Averaged Navier-Stokes equations (RANS), and will employ differential and algebraic second-moment closures (the latter including non-linear eddy-viscosity models). In addition, Large-Eddy Simulations (LES) will be used as a prospective future technique for validating the unsteady RANS approach for problems associated with unsteady phenomena and coherent eddy structure. The development of the models will be supported by a limited number of well-selected experiments to be carried out in the project. The validated new models will also be incorporated in industrial CFD codes and validated in practice. The project will be a joint effort of 6 internationally renowned groups, which includes: (1) turbulence modellers, (2) experimentalists, (3) industrial CFD codes developers and vendors, and (4) a road-vehicle manufacturer. Fields of science engineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaircraftnatural sciencesphysical sciencesclassical mechanicsfluid mechanicsfluid dynamicsengineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaeronautical engineeringnatural sciencesmathematicsapplied mathematicsnumerical analysis Programme(s) FP4-BRITE/EURAM 3 - Specific research and technological development programme in the field of industrial and materials technologies, 1994-1998 Topic(s) 0302 - Transports Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator Technische Universiteit Delft Address 1,lorentzweg 1 2628 CJ Delft Netherlands See on map EU contribution No data Participants (5) Sort alphabetically Sort by EU Contribution Expand all Collapse all AVL LIST GMBH Austria EU contribution € 0,00 Address 48,hans-list-platz 1 8020 Graz See on map Other funding No data GIE PSA Peugeot Citroën France EU contribution € 0,00 Address Chemin de la malmaison 78140 Velizy-villacoublay See on map Other funding No data UNIVERSITY OF ERLANGEN-NUREMBERG Germany EU contribution € 0,00 Address Cauerstrasse 4 91058 Erlangen See on map Other funding No data UNIVERSITY OF MANCHESTER INSTITUTE OF SCIENCE AND TECHNOLOGY United Kingdom EU contribution € 0,00 Address Sackville street M60 1QD Manchester See on map Other funding No data Électricité de France (EDF) France EU contribution € 0,00 Address 6 quai watier 78401 Chatou See on map Other funding No data
