Nonlinear interaction of upstream propagating sound with transonic flows in a nozzle

Ferrand, Pascal; Aubert, S.; Smati, L.; Bron, Olivier

doi:10.2514/6.1998-2213

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Aerodynamic Computation1

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2001

2003

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Cited by 4 publications

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“…The compressible nite volume code Proust 9 is used in the current investigation. Both the convective uxes and the viscous terms are evaluated by using a second-ordercentered scheme.…”

Section: Aerodynamic Computationmentioning

confidence: 99%

Prediction of Rod-Airfoil Interaction Noise Using the Ffowcs-Williams-Hawkings Analogy

2003

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Sound generated at low Mach number by an airfoil in the wake of a rod is investigated numerically. The Gaussian spanwise loss of coherence of the vortex shedding is shown to have a signi cant in uence on the broadband noise. Spanwise effects are successfully introduced into a time-domain formulation of the Ffowcs-Williams-Hawkings analogy, which is applied to aerodynamic data computed on various contours around the source region. It is shown that a careful choice of these contours is required. The ow eld is obtained from a two-dimensional Reynolds averaged Navier-Stokes calculation. Computed far-eld spectra compare very well to measurements obtained in an accompanying experiment.

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“…The compressible nite volume code Proust 9 is used in the current investigation. Both the convective uxes and the viscous terms are evaluated by using a second-ordercentered scheme.…”

Section: Aerodynamic Computationmentioning

confidence: 99%