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Simulation compressible 3D d’un silencieux avec niveaux de prévision de pseudo-son.

3D compressible simulation of a muffler with pseudosound prediction levels.

Numéro : pap.1503

Auteurs : RUANO J., LÓPEZ J., LEHMKUHL O., et al.

Résumé

The main objective of this paper is to present a numerical resolution of a suction muffler configuration by using an in-house object oriented CFD & HT code TermoFluids (Lehmkuhl et al. 2007), able to handle tridimensional geometries, unstructured meshes with intrinsic parallelization. This code has been adapted to be able to resolute 3D Navier-Stokes equations in their compressible form and coupled with the numerical resolution of the whole compressor domain by means of a parallel and object-oriented called NEST (Lopez, 2016). The numerical results aim to study the influence of the suction muffler inner geometry in the fluidynamic behavior inside the muffler while considering how this internal geometry affects the global performance of the compressor. Hence, the inlet and outlet boundary conditions at the muffler are obtained from the numerical simulation of the whole compressor using NEST, while the fluid behavior inside the muffler is numerically simulated by means of detailed analysis. The paper presents a methodology that handles with Large Eddy Simulation (LES) models for the turbulent motion of fluid inside the muffler, the formulation of Navier-Stokes in their compressible form, dealing with numerical problems derived from the compressible part, and the coupling of the whole compressor simulation to set boundary condition.

Documents disponibles

Format PDF

Pages : 10 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : 3D compressible simulation of a muffler with pseudosound prediction levels.
  • Identifiant de la fiche : 30019599
  • Langues : Anglais
  • Source : 2016 Purdue Conferences. 23rd International Compressor Engineering Conference at Purdue.
  • Date d'édition : 11/07/2016

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