Application of the variational formulation of Lighthill’ s acoustic analogy to trailing-edge noise is considered. Use is made of this formulation to study the effect of e niteness of the chord and the variation of far-e eld pressure directivity with frequency. Numerical analytical solution results are validated for certain limiting cases. Use is also made of this methodology to calculate the far-e eld acoustic pressure for a low-Mach-number turbulent e ow. To determine the acoustic sources for this problem, we employ an unstructured mesh, large eddy simulation of the incompressible Navier ‐Stokes equations.
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Oberai et al. (2002) studied this question.
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