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Aeroacoustics of an Automobile A-Pillar Rain Gutter: Computational and Experimental Study
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 01, 1999 by SAE International in United States
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Noise due to the flow over an automobile A-pillar rain gutter in isolation was computed using a two step procedure. Initially the flow solution was obtained by solving the Reynolds Averaged Navier Stokes (RANS) equations. Acoustical Sources were extracted from the flow solution and propagated to the far-field using the Lighthill-Curle equation. Experiments were conducted to evaluate the computations. Compared results include steady pressures, time dependent pressures, and sound intensity levels. Computed results and experimental data were reduced in a similar way to ensure a one to one comparison. Computed results are in good agreement with the experimental values. A-weighted noise levels are predicted reasonably well.
CitationKumarasamy, S. and Karbon, K., "Aeroacoustics of an Automobile A-Pillar Rain Gutter: Computational and Experimental Study," SAE Technical Paper 1999-01-1128, 1999, https://doi.org/10.4271/1999-01-1128.
- Casello, M. Mantovani, M. “Experimental and Numerical Aeroacoustics at Centro Ricerche FIAT for the Design of Ground Vehicles” Seminar on Aerodynamics and Power Train Automobile Noise, Session 1 - Aeroacoustics Industrie Pininfarina Itlay 1996
- George, A.R. “Automobile Aerodynamic Noise” SAE Transactions 1990
- Blake, W.K. “Mechanics of Flow-Induced Sound and Vibration Vol. I. General Concepts and Elementary Sources” Applied Mathematics and Mechanics Series Academic Press, Inc. 1986
- Lighthill, M.J. “On Sound Generated Aerodynamically. I. General Theory” Proceedings of Royal Society 211 1954
- Lighthill, M.J. “On Sound Generated Aerodynamically II. Turbulence as a Source of Sound” Proceedings of Royal Society 222 1954
- Wang, M. Lele, S. Moin, P. “Computation of Quadrupole Noise Using Acoustic Analogy” AIAA Journal 34 11 Nov. 1996
- Kumarasamy, S. “Incompressible Flow Simulation over a Half Cylinder with Results used to Compute associated Acoustic Radiation”
- Kumarasamy, K. Korpus, R.A. Barlow, J.B. “Noise Generated due to Flow over a Circular Cylinder” Second Computational Aeroacoustics (CAA) Workshop on Benchmark Problems NASA Conference Publication 3352 June 1997
- Bergamini, P. Casello, M. Vitali, D.F. “Computational Prediction of Vehicle Aerodynamic Noise by Integration of a CFD Technique with Lighthill's Acoustic Analogy” SAE Congress 1997
- Lyrintzis, A.S. “The use of Kirchoff's Method in Computational Aeroacoustics” Computational Aero-and Hydro acoustics ASME 1993
- Hardin, J.C. Pope, D.S. “Sound Generation by Flow over a Two dimensional Cavity” AIAA Journal 33 3 1995
- Baeder, J.D. “Euler Solutions to Non-linear Acoustics and Non-lifting Rotor Blades” International Technical Specialists Meeting Rotorcraft Acoustics and Rotor Fluid Dynamics Oct. 15-17 1991
- Hucho, W.H. “Aerodynamics of Road Vehicles” Butterworths Publisher 1987
- “PAM-FLOW Version 1997” Theory Manual, Engineering Systems International June 1997
- Hardin, J.C. “Introduction to Time Series Analysis” NASA Reference Publication 1145
- White, F.M. “Viscous Flow” McGraw Hill Series in Mechanical Engineering Second 1991
- “Sound Power” Bruel and Kjaer Monograph