Noise pollution around airports, trains, and industries increasingly attracts environmental concern and regulation. Designers and researchers have intensified the use of large-eddy simulation (LES) for noise reduced industrial design and acoustical research. This book, written by 30 experts, presents the theoretical background of acoustics and of LES, followed by details about numerical methods, e.g. discretization schemes, boundary conditions, coupling aspects. Industrially relevant, hybrid RANS/LES techniques for acoustic source predictions are presented in detail. Many applications are featured ranging from simple geometries for mixing layers and jet flows to complex wing and car geometries. Selected applications include recent scientific investigations at industrial and university research institutions. Presently one can't offer perfect solution methodologies that address all relevant applications, however the book presents a state of the art collection of methods, tools and evaluation methodologies. The advantages and weaknesses of both the commercial and the research methodologies are carefully presented.
Inhaltsverzeichnis
Preface; Part I. Introduction: 1. The importance of acoustic research Thomas Huettl; 2. Introduction to computational aeroacoustics Manuel Kessler; 3. State of the art: LES for acoustics Claus Wagner, Oliver Fleig and Thomas Huettl; Part II. Theoretical Background: Aeroacoustics Avraham Hirschberg and Sjoerd Rienstra; Part III. Theoretical Background: Large-Eddy Simulation Pierre Sagaut; Part IV. Use of Hybrid RANS/LES for Acoustic-Source Predictions Paul Batten, Philippe Spalart and Marc Terracol; Part V. Numerical Methods: 4. Spatial and temporal discretization schemes Tim Broeckhoven, Jan Ramboer, Sergey Smirnov and Chris Lacor; 5. Boundary conditions for LES Michael Breuer; 6. Boundary conditions: acoustics Fang Q. Hu; 7. Some concepts of LES-CAA coupling Wolfgang Schroder and Roland Ewert; Part VI. Applications and Results of Large-Eddy Simulations for Acoustics: 8. Plane and axisymmetric mixing layers Christophe Bogey and Christophe Bailly; 9. Far-field jet acoustics Daniel J. Bodony and Sanjiva K. Lele; 10. Cavity noise Xavier Gloerfelt, Christophe Bogey and Christophe Bailly; 11. Aero-elastic noise Sandrine Vergne, Jean-Marc Auger, Fred Perie, Andre Jacques and Dimitri Nicolopoulos; 12. Trailing edge noise Roland Ewert and Eric Manoha; 13. Blunt bodies (cylinder, cars) Franco Magagnato; 14. Internal flows Philippe Lafon, Fabien Crouzet and Jean Paul Devos; 15. Industrial aeroacoustics analyses Fred Mendonca; Part VII. Conclusions Claus Wagner, Pierre Sagaut and Thomas Huettl.
