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Document IIF

Optimisation de la forme d'un éjecteur diphasique au R744 basée sur la mécanique numérique des fluides (CFD).

CFD-based shape optimisation of two-phase ejector for R744.

Numéro : pap. n. 410

Auteurs : PALACZ M., SMOLKA J., FIC A., et al.

Résumé

In this study, a CFD-based shape optimisation of a two-phase R744 ejector was performed. The investigated device is to be installed in a refrigeration system of supermarkets located in two different ambient conditions. To simulate the carbon dioxide flow through the ejector, an appropriate CFD tool was developed. The applied mathematical model was based on the HEM approach. The CFD tool was controlled with the inhouse script to automatically setup the model, run the computations and post-process the obtained results. This tool was combined with the optimisation procedure for refinement of the selected parts of the ejector geometry. The objective function was formulated to maximise the total ejector efficiency. Each ejector shape was computed for two operating regimes. The optimisation results showed the increase of the ejector performance comparing to the basic geometry. However, not for all the operating regimes the ejector performance improvement was obtained.

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Format PDF

Pages : 8 p.

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 : CFD-based shape optimisation of two-phase ejector for R744.
  • Identifiant de la fiche : 30015808
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0410

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