Objectif By using the latest theory of fluid flows in engines and combining it with existing computational fluid dynamics (CFD) software, this project created software models for engine design. The software, which uses two different methods, provides models delineating the behaviour of gas in large engines during the intake, compression, and exhaust strokes. Experimental engines have been built to collect additional data to validate the software models.ENHANCING EFFICIENCY OF LARGE DIESEL ENGINES AS WELL AS DESIGNING GEOMETRIES FOR NEW SPARK IGNITION GAS ENGINES NEED THE AVAILABILITY OF AN INDUSTRIAL COMPUTER SIMULATION TOOL PREDICTING THE AERODYNAMIC TURBULENT FLOW IN THE CYLINDER.THE MAJOR FEATURES OF THE PROJECT ARE:- MODELLING THE REAL GEOMETRIES AND REAL MOVEMENT OF THE VALVES AND PISTON HEAD,- MODELLING THE PIPE NETWORKS AS WELL AS THE UNSTEADY RESPONSE OF THE TURBOCHARGER,- PERFORMING LDV MEASUREMENTS ON TRANSPARENT PISTON HEAD ENGINE,- COMPARING VARIOUS TURBULENCE MODELS AND VALIDATING A SELECTED ONE AGAINST MEASUREMENTS,- PERFORMING OVERALL COMPARISONS WITH MEASUREMENTS ON REAL ENGINES,- TESTING EFFECTS OF GEOMETRICAL AND/OR OPERATING CONDITIONS MODIFICATIONS ON GLOBAL EFFICIENCY FROM EXPERIMENTAL POINT OF VIEW AS WELL AS COMPUTATIONAL APPROACH.THE ACHIEVEMENTS TO DATE ARE AS FOLLOWS:- AT BERTIN: THE DEVELOPMENT OF A 3D FINITE ELEMENT FLUID MECHANICS SOFTWARE IS WELL ADVANCED,- AT CHAM: THE PHOENICS CODE WILL BE USED AS A STARTING POINT,- AT RUSTON DIESELS: THE TEST RIG ON WHICH OVERALL MEASUREMENTS WILL TAKE PLACE IS NOW AVAILABLE,- AT UNIVERSITA DELLA CALABRIA: ALL THE ACQUISITION DATA SOFTWARE IS DEVELOPED AND MEASUREMENTS ARE NOW FEASIBLE. Champ scientifique medical and health sciencesbasic medicineneurologystrokenatural sciencesphysical sciencesclassical mechanicsfluid mechanicsfluid dynamicscomputational fluid dynamicsnatural sciencesmathematicspure mathematicsgeometrynatural sciencescomputer and information sciencessoftwaresoftware applicationssimulation softwarenatural sciencesmathematicsapplied mathematicsmathematical model Programme(s) FP1-BRITE - Multiannual research and development programme (EEC) in the fields of basic technological research and the applications of new technologies (BRITE), 1985-1988 Thème(s) Data not available Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur Bertin et Cie S.A. Contribution de l’UE Aucune donnée Adresse 59,Rue Pierre Curie 59 78373 Plaisir France Voir sur la carte Coût total Aucune donnée Participants (3) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire Concentration Heat and Momentum Ltd Royaume-Uni Contribution de l’UE Aucune donnée Adresse Bakery House 40 High Street SW19 5AU London Voir sur la carte Coût total Aucune donnée Ruston Diesels Ltd Royaume-Uni Contribution de l’UE Aucune donnée Adresse WA12 8RU Newton-le-Willows Voir sur la carte Coût total Aucune donnée Università degli Studi della Calabria Italie Contribution de l’UE Aucune donnée Adresse Via Brodolini Centro Rende 87036 Commenda di Rende Cosenza Voir sur la carte Coût total Aucune donnée