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Document IIF

Évaluation de l'écoulement turbulent à travers des soupapes de compresseurs dynamiques grâce à un modèle par simulation à grande échelle.

Large eddy simulation model assessment of the turbulent flow through dynamic compressor valves.

Numéro : pap. n. 29

Auteurs : ESTRUCH O., LEHMKUHL O., RIGOLA J., et al.

Résumé

The present paper attempts the dynamic simulation of the fluid flow through the valve reed taking into account valve movement due to piston displacement. This work widens previous studies based on numerical experiments with static geometry and constant boundary conditions. Hence, in this work the newly in-house implemented CFD and moving mesh coupled code TermoFluids is presented. The CFD solver consists of a three-dimensional explicit finite volume fractional-step algorithm formulated in a second-order, conservative and collocated unstructured grid arrangement. Large eddy simulation is performed to solve the turbulent flow, using the subgrid scale WALE model. A radial basis function interpolation procedure is used to dynamically move the mesh according to the displacement of the valve. A simplified geometry of an axial hole plus a radial diffuser with a piston based inlet condition is considered. The valve dynamics is assumed to be given by a law according to modal analysis of valve reed.

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Pages : 8 p.

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    20 €

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Détails

  • Titre original : Large eddy simulation model assessment of the turbulent flow through dynamic compressor valves.
  • Identifiant de la fiche : 30008757
  • Langues : Anglais
  • Source : Compressors 2013: 8th International Conference on Compressors and Coolants.
  • Date d'édition : 02/09/2013

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