Aims of researches conducted in aeroacoustics are to reduce noise generated by turbulent flows. The main pollutions are related to transportation systems in urban environment: noise in the vicinity of roads, railways or airports. To this societal issue, there are also strategic and economic interests to ensure the development of the transportation industry. As illustration of problems regularly encountered in engineering, we can mention noise induced by wall pressure fluctuations, flow noise in sonar domes for underwater applications, aircraft interior noise or the protection of payload of space launchers. Scientific challenges of aeroacoustics are also very numerous, but before developing this point, it is necessary to define the discipline and scientific contours of the present special interest group.
Aeroacoustics is the discipline devoted to the study of aerodynamic noise, to its propagation in generally non-homogeneous media, its radiation in far field and also ways to reduce noise by active control of sound field or more directly by control of sources of sound. Only the generation and propagation in gases is retained here. Similar phenomena occur in case of heavy fluids, as for acoustic propagation underwater for example, and a distinction is often made between aeroacoustics and hydroacoustics. Problems involving thermo-acoustic instabilities (see SIG 28), wall pressure fluctuations exciting structures (see SIG 41), or modelling of boundary conditions to address problems of propagation or control are also close to current activities in the group. The noise monitoring may also be used as a diagnostic tool for duct propagation, rotating machines or medicine. These frontiers correspond fairly well to what can be observed in international conferences and research programs initiated by Europe.
A considerable number of research topics related to turbulence and compressible flows are under the scope of the SIG 39, as identification of turbulent mechanisms that generate the acoustic sources or propagation phenomena in complex flows. These problems are nonlinear and multi-scales. Wave nature of sound and its very low energy level compared to the turbulent flow among other features, require specific developments in numerical simulations as well as in experiments. Another particularity of the problems addressed in aeroacoustics is the coupling that often occurs with another discipline as already mentioned above.
Purpose of SIG 39 is mainly to organise events of interest for the group as summer schools, courses and workshops.
ERCOFTAC SIG39 Symposium 10th - 12th June 2024 Objectives: The Ercoftac SIG 39 Symposium, Coherent Structures in Aeroacoustics, will gather experts from the aeroacoustics community to discuss recent progress in the identification, understanding and modelling of coherent structures in10 Jun 2024
ERCOFTAC Workshop ASTROFLU VI May 2024 Ecole Centrale de Lyon, Ecully (near Lyon, France) Coordinators: Prof. Claude Cambon Organisers: PC Henri Bénard , SIG35, SIG14 , SIG50 / LMFA Local scientific and organising committee: TBC Aim: The aim of our new ASTROFLU VI workshop20 May 2024
ERCOFTAC Course Computational Aeroacoustics, IV 26th - 27th March 2024 TU Wien, Building BA, Getreidemarkt 9, 1060 Wien, Austria Registration is now open!!! Organizers: Dr Christophe Bogey, LMFA UMR 5509, Ecole Centrale de Lyon, France Prof Stefan Schoder, Institute of26 Mar 2024
ERCOFTAC SIG39 Conference Aeroacoustic Installation Effects in Conventional and New Aircraft Propulsion Systems 22nd - 24th November 2023 Venue: HdW/bbw - Bildungswerk der Wirtschaft in Berlin und Brandenburg am Schillertheater 2, 10625 Berlin, Germany Deadline for registrations: 12th22 Nov 2023
ERCOFTAC Workshop ASTROFLU V 7th - 8th December 2021 Ecole Centrale de Lyon, amphi 203 Ecully (near Lyon, France) Coordinators: Prof. Claude Cambon and Prof. Tomas Bodnar Organisers: PC Henri Bénard , SIG35, SIG14 , SIG50 / LMFA Local scientific and organising committee7 Dec 2021
The DJINN-ENODISE Conference on ”Aeroacoustic Installation Effects in Conventional and New Aircraft Propulsion Systems” took place in Berlin on 22nd - 24th November 2023. The conference was co-organized by the VKI and CFD Berlin, with the organizing committee including people from the two12 Dec 2023
Computational Aeroacoustics, IV 26th - 27th March 2024 TU Wien, Building BA, Getreidemarkt 9, 1060 Wien, Austria Registration is now open!!! ERCOFTAC is proud to announce the forth edition of the course on "Computational Aeroacoustics". This course is intended for researchers in5 Aug 2023