Partager

Document IIF

Modélisation de la turbulence d'un éjecteur supersonique au R134a monophasé. 1: Comparaison des modèles numériques.

Turbulence modeling of a single-phase R134a supersonic ejector. 1. Numerical benchmark.

Auteurs : CROQUER S., PONCET S., AIDOUN Z.

Type d'article : Article, Article de la RIF

Résumé

The present work reports a numerical analysis of a supersonic ejector in single-phase conditions using R134a as the working fluid. A numerical benchmark of some thermodynamic and two-equation turbulence models has been carried out to highlight the numerical model offering the best compromise between accuracy and calculation cost. The validation is achieved by comparing the predicted entrainment ratio with the experimental data of Garcia del Valle et al. (2014). The k-? SST model together with the REFPROP 7.0 database equation appears to be the best combination to predict accurately the ejector performance and capture the shock wave structure. The influence of the outlet temperature, the discussion about the validity of some assumptions made by one-dimensional (1D) models and the exergy analysis within the ejector for the present operating conditions will later be discussed in Part 2 (Croquer et al., 2015).

Documents disponibles

Format PDF

Pages : 140-152

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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

Détails

  • Titre original : Turbulence modeling of a single-phase R134a supersonic ejector. 1. Numerical benchmark.
  • Identifiant de la fiche : 30016563
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 61
  • Date d'édition : 01/2016

Liens


Voir d'autres articles du même numéro (13)
Voir la source

Indexation