Acoustic source terms study for non-isothermal flows using an aeroacoustic hybrid approach |
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Authors: | François Golanski Christian Prax |
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Institution: | Laboratoire d''études aérodynamiques, université de Poitiers, UMR CNRS 6609, bâtiment K, 40, avenue du recteur Pineau, 86000 Poitiers, France |
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Abstract: | This paper presents a numerical study of noise source term in non-isothermal flows in the context of an aeroacoustic hybrid technique at low Mach numbers. Asymptotic analysis applied to the fully compressible Navier–Stokes equations provides separated sets of equations for the dynamic of the flow and the production and propagation of acoustic waves. Comparisons with analytical dipole and quadrupole distributions are performed, confirming the dipole type of non-isothermal source distribution. This paper is a preliminary work for some more extensive studies on the topic. To cite this article: F. Golanski, C. Prax, C. R. Mecanique 333 (2005). |
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Keywords: | Acoustics Aeroacoustic sources Non-isothermal flow Low Mach number Acoustique Sources aéroacoustiques Écoulements anisothermes Faibles nombres de Mach |
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