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A new CFD-DEM model integrating particle-liquid and particle-wall heat transfer for ice slurry melting in heat exchange tube.

Auteurs : ZHOU Z., ZHANG G., LU W., WU Z., CUI D., DOU B., GONG Y., HAN H.

Type d'article : Article de la RIF

Résumé

Ice slurry, a promising phase-change fluid for thermal energy storage and transport, exhibits complex flow and melting behaviors that are not fully captured by existing numerical models. A coupled Eulerian-Lagrangian framework is presented to calculate ice slurry phase change in a heat exchanger. This modelling framework comprehensively integrates three heat transfer mechanisms: (i) particle-fluid convective heat transfer, (ii) direct conductive particle-wall contact heat transfer, and (iii) liquid film conduction for particle-fluid-wall thermal exchange. Results show that liquid film conduction contributes 60 ~ 82% of the total heat transfer rate, while particle-fluid convection accounts for 18 ~ 40%, and direct particle-wall contact heat transfer is negligible (<1%). The minimum conduction distance significantly influences melting efficiency, with a reduction from 10-6 m to 10-12 m increasing total heat transfer by up to 338 W at a wall temperature of 303.15 K. Axial analysis reveals three distinct melting regimes: uniform, stratified development, and stable melting. This work provides a comprehensive and particle-resolved framework for optimizing ice slurry-based heat exchangers.

Documents disponibles

Format PDF

Pages : 17 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 : A new CFD-DEM model integrating particle-liquid and particle-wall heat transfer for ice slurry melting in heat exchange tube.
  • Identifiant de la fiche : 30034762
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 185
  • Date d'édition : 05/2026
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2026.02.023

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