Computational Aeroacoustics — Present Status and Future Promise
The field of computational aeroacoustics (CAA), in which sound generation by unsteady flows is calculated from first principles, has recently emerged as a viable discipline. This paper describes one CAA technique which has been validated for low Mach number, low Reynolds number, two-dimensional flows. Results of its application to geometries producing both dipole and quadrupole type sound sources are presented along with theoretical and experimental comparisons. In addition, the future promise of this and other CAA techniques in removing the present limitations is evaluated.
KeywordsReynolds Number Computational Fluid Dynamic Acoustic Radiation Sound Radiation Vorticity Contour
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- 1.Crow, S. C.: Aerodynamic Sound Emission as a Singular Perturbation Problem, Stud. App. Math., Vol. XLIX, No. 1, pp. 21–44, 1970.Google Scholar
- 5.Hardin, J. C. and Lamkin, S. L.: Aeroacoustic Interaction of a Distributed Vortex with a Lifting Joukowski Airfoil, AIAA Paper No. 84–2287, 1984.Google Scholar
- 6.Lamkin, S. L. and Hardin, J. C.: Aeroacoustic Computation from Vortex-Pair Merging, SIAM 1983 Fall Meeting, Norfolk, Virginia, 1983.Google Scholar