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Modèle numérique de tubes capillaires : performance améliorée et étude des effets non adiabatiques.

Numerical model of capillary tubes: enhanced performance and study of non adiabatic effects.

Numéro : pap. 2664

Auteurs : ABLANQUE N., OLIET C., RIGOLA J., et al.

Résumé

In the present work a numerical model to simulate the thermal and fluid-dynamic phenomena inside non-adiabatic capillary tubes is presented. It consists of an improved version of the distributed model detailed in Ablanque et al. (2010). The model is based on a pseudo-homogeneous two-phase flow model where the governing equations (continuity, momentum, energy and entropy) are integrated over the discretized fluid domain and solved by means of a step-by-step scheme. The main novelty of the improved algorithm is its enhanced capability to address common convergence issues typically found in distributed models for non-adiabatic capillary tubes (i.e. flow discontinuities caused by the refrigerant re-condensation). In addition, the newest version of the model allows the simulation of both concentric and lateral configurations. This work presents the detailed numerical aspects of the new model, the implementation and validation of the lateral configuration, and a detailed study of its performance when addressing the aforementioned numerical difficulties.

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 : Numerical model of capillary tubes: enhanced performance and study of non adiabatic effects.
  • Identifiant de la fiche : 30013243
  • Langues : Anglais
  • Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 14/07/2014

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