Computational Aeroacoustics

Edited by Ganesh Raman
Publication date: December 2008 • ISBN 978-0-906522-55-4 • vii + 524pp • 85

 

about the book

Computational Aeroacoustics (CAA) deals with the simulation of sound generated by unsteady flows and is a rapidly growing area due to advances in computational power and the significant projected growth in global transportation. With the era of widespread supersonic flight and the proliferation of general aviation aircraft on future horizons, the noise generated by aircraft is of great concern for communities near airports, for passengers in the aircraft’s cabin, and for the structural integrity of the airframe. In addition, there are a number of situations that desire lower noise including underwater vehicles, wind turbines, and helicopter rotors. Understanding the source of the noise itself, its manifestation in the nearfield and propagation to the farfield are all critical in the development of future noise reduction technologies. When compared to conventional flow computations, CAA requires special treatment in the areas of numerical errors, low numerical noise, numerical dispersion, dissipation, non-reflective boundary conditions, methodologies to test boundary condition performance, and consideration of multiple scales. The perspectives in this book are provided by internationally recognized experts in the field. The book will provide a student, scientist or practicing engineer with a concise overview of developments in the field of computational aeroacoustics and a good starting point for further research.

 

Contents

Preface

Acknowledgements

Part I: Computational Methods

Surface integral methods in computational aeroacoustics—from the (CFD) near-field to the (acoustic) far-field
Anastasios S. Lyrintzis

Comparison of numerical schemes for a realistic computational aeroacoustics benchmark problem
R. Hixon, M. Nallasamy, S. Sawyer and R. Dyson

A new time domain formulation for broadband noise predictions
J. Casper and F. Farassat

A boundary element method for aerodynamics and aeroacoustics of bodies in arbitrary motions
L. Morino, G. Bernardini and M. Gennaretti

A three-dimensional parallel discontinuous Galerkin solver for acoustic propagation studies
A. Crivellini and F. Bassi

On the accuracy of direct noise calculations based on the Euler model
Ilya V. Abalakin, Alain Dervieux and Tatyana K. Kozubskaya

A Fourier pseudospectral method for some computational aeroacoustics problems
Xun Huang and Xin Zhang

A splitting method for aeroacoustic noise prediction of low Mach number viscous flows
Young J. Moon and J. H. Seo

Assessment of computational models for the effect of aeroelasticity on BVI noise prediction
Giovanni Bernardini, Jacopo Serafini, Sandro lanniello and Massimo Gennaretti

Validation of a time domain formulation for propeller noise prediction
Ghader Ghorbaniasl and Charles Hirsch

Hybrid RANS-LES modeling for cavity aeroacoustics predictions
Srinivasan Arunajatesan and Neeraj Sinha

Part II: Computational Applications
Landing gear aerodynamic noise prediction using unstructured grids
F. J. Souliez, L. N. Long, P. J. Morris and A. Sharma

The simulation of airframe noise applying Euler-perturbation and acoustic analogy approaches
R. Ewert, J. W. Delfs and M. Lummer

Wake-airfoil interaction as broadband noise source: a large-eddy simulation study
Jérôme Boudet, Nathalie Grosjean and Marc C. Jacob

Numerical evidence of mode switching in the flow-induced oscillations by a cavity
Xavier Gloerfelt, Christophe Bogey and Christophe Bailly

Computation of engine noise propagation and scattering off an aircraft
D. Stanescu, J. Xu, M. Y. Hussaini and F. Farassat

A three-dimensional linearized Euler analysis of classical wake/stator interactions: validation and unsteady response predictions
D. Prasad and J. M. Verdon

Fan interaction noise predictions using RANS-BEM coupling
C. Polacsek and S. Burguburu

Computation of fan noise radiation through an engine exhaust geometry with flow
S. K. Richards, X. X. Chen, X. Huang and X. Zhang

RANS and DES turbulence model predictions of noise on the M219 cavity at M=0.85
Fred Mendonça, Richard Allen and David Kirkham

Numerical investigation of high speed free shear flow instability and Mach wave radiation
Alexey N. Kudryavtsev and Dmitry V. Khotyanovsky

Application of numerical and experimental techniques for the aeroacoustic characterisation of a car rear-view mirror
Christoph Reichl, Christian Krenn, Martin Mann and Hermann Lang

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The author

Dr. Ganesh Raman’s research interests are in the areas of supersonic jet noise, screech and high speed jet flows. He has over 20 years of experience working with Industry, Academia and the U.S. Government. He is Associate Dean for Research at the Illinois Institute of Technology (IIT) and Associate Professor for Mechanical and Aerospace Engineering. Before coming to IIT he spent 14 years performing contract research at NASA Glenn Research Center on jet aeroacoustics. He is a Fellow of the American Society of Mechanical Engineers (ASME), Fellow of the Royal Aeronautical Society, Associate Fellow of the American Institute of Aeronautics and Astronautics (AIAA) and serves as Editor-in-Chief of the International Journal of Aeroacoustics. Dr. Raman obtained a Bachelor’s degree from the Indian Institute of Technology, Bombay and a Ph.D. from Case Western Reserve University, USA.