Objective Fluid machines are a familiar part of everyday life in the home, the workplace and in transportation systems. Virtually all fluid machinery generates sound, and some examplessuch as motor cycle and aircraft jet enginesare notorious for their noise output. It is hard to identify any day to day human activity in which individuals are not exposed to fluid machinery noise. For instance in the BRITE EURAM project no. 5983 (EQUIP), fans, where flow is the main cause of noise generation, have been identified as one of the most important noise sources in machines. Another important aerodynamic source process is regenerated noise in flow ducts, which imposes a major limitation for the performance of compact flow systems. In improving the performance there is also a tendency to increase flow velocities in fluid machines, which increases the importance of flow generated noise. Increased flow velocities also change the sound transmission properties of flow ducts in machines. Overall, the physics of sound generation and transmission in fluid machinery systems is not well understood. The state of the art in the acoustics of fluid machinery falls far short of the requirement for well developed and comprehensive predictive methods, that can be used for a better acoustical design of these devices. Even physical modeling of the passive components in the ductwork of fluid machines is limited mainly to relatively simple systems, and the understanding of source mechanisms and complex flow/acoustic interaction phenomena is only barely adequate in a limited number of cases. The major innovative aspects of this project are new or improved prediction models with the following important applications: * source descriptions for IC engines * design of fans for minimum noise production in non ideal flow conditions * minimization of sound transmission and regenerated noise in flow duct systems * design of compact silencers based on periodic scatters or folded resonators * design of dissipative silencers (effects of hot gas flow and vibrations). The tools developed in this project will be used by the industry to develop less noisy systems and products in the following industrial sectors: power generation, transportation and domestic appliances. The industrial products directly linked to the project via the participating industrial partners include: fans, air coolers, IC engines, ventilation systems, domestic appliances (e.g. vacuum cleaners, air cleaners and hair dryers) and exhaust mufflers for gas turbine power plants and automobiles. Fields of science engineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaircraftnatural sciencesphysical sciencesacoustics Programme(s) FP4-BRITE/EURAM 3 - Specific research and technological development programme in the field of industrial and materials technologies, 1994-1998 Topic(s) 0202 - New methodologies for product design and manufacture Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator ROYAL INSTITUTE OF TECHNOLOGY Address 8,teknikringen 8 100 44 Stockholm Sweden See on map EU contribution € 0,00 Participants (8) Sort alphabetically Sort by EU Contribution Expand all Collapse all Asea Brown Boveri AB Sweden EU contribution € 0,00 Address 2,kopparbergsvägen 721 83 Västeras See on map CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE France EU contribution € 0,00 Address Centre d'affaires oberthur, 74e rue de paris 35069 Rennes See on map EINDHOVEN UNIVERSITY OF TECHNOLOGY Netherlands EU contribution € 0,00 Address 2,den dolech 2 5600 MB Eindhoven See on map NEDERLANDSE ORGANISATIE VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO* Netherlands EU contribution € 0,00 Address 1,stieltjesweg 1 2628 CK Delft See on map PHILIPS DOMESTIC APPLIANCES AND PERSONAL CARE B.V. Netherlands EU contribution € 0,00 Address 5,oliemolenstraat 5 9203 ZN Drachten See on map REGIENOV - RENAULT RECHERCHE ET INNOVATION France EU contribution € 0,00 Address 9,avenue du golf 1 78288 Guyancourt See on map University of Hull United Kingdom EU contribution € 0,00 Address Cottingham road HU6 7RX Hull See on map Volvo Truck Corporation Sweden EU contribution € 0,00 Address 405 08 Göteborg See on map
