Large-eddy Simulation for Acoustics

by Wagner, Claus; Huttl, Thomas; Sagaut, Pierre

• ISBN13: 9781107406339
• ISBN10: 1107406331
• Format: Paperback
• Copyright: 2012-08-09
• Publisher: Cambridge Univ Pr

Summary

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 2007 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 scientific investigations at industrial and university research institutions.

Table of Contents

Preface

Introduction

The importance of acoustic research

Introduction to computational aeroacoustics

State of the art: LES for acoustics

Theoretical Background: Aeroacoustics

Theoretical Background: Large-Eddy Simulation

Use of Hybrid RANS/LES for Acoustic-Source Predictions

Numerical Methods

Spatial and temporal discretization schemes Tim Broeckhoven

Boundary conditions for LES

Boundary conditions: acoustics

Some concepts of LES-CAA coupling

Applications and Results of Large-Eddy Simulations for Acoustics

Plane and axisymmetric mixing layers

Far-field jet acoustics

Cavity noise

Aero-elastic noise

Trailing edge noise

Blunt bodies (cylinder, cars)

Internal flows

Industrial aeroacoustics analyses

Conclusions

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