Validation of a Computational Aeroacoustics Code for Nonlinear Flow about Complex Geometries Using Ringleb's Flow

2005 ◽  
Author(s):  
Vinit Satav ◽  
Ray Hixon ◽  
M. Nallasamy ◽  
Scott Sawyer
Keyword(s):  
Nonlinear Flow ◽  
Computational Aeroacoustics ◽  
Complex Geometries

Review: The Use of Kirchhoff’s Method in Computational Aeroacoustics

1994 ◽  
Vol 116 (4) ◽  
pp. 665-676 ◽  
Author(s):  
A. S. Lyrintzis
Keyword(s):  
Near Field ◽  
Integral Formulation ◽  
Nonlinear Flow ◽  
Control Surface ◽  
Computational Aeroacoustics ◽  
Noise Sources ◽  
Continuous Surface ◽  
Flow Effects ◽  
Cfd Method ◽  
Field Sound

A comprehensive review of the use of Kirchhoff’s method in computational aeroacoustics is given. Kirchhoff’s integral formulation allows radiating sound to be evaluated based on quantities on an arbitrary control surface S if the wave equation is assumed outside. The control surface S is assumed to include all the nonlinear flow effects and noise sources. Thus only surface integrals are needed for the calculation of the far-field sound. A numerical CFD method can be used for the evaluation of the flow-field solution in the near-field and thus on surface S. Kirchhoff’s integral formulation has been extended to an arbitrary, moving, deformable piecewise-continuous surface. The available Kirchhoff formulations are reviewed and various aeroacoustic applications are given. The relative merits of Kirchhoff’s method are also discussed.

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