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A localized meshless approach using radial basis functions for conjugate heat transfer problems in a heat exchanger.

Approche localisée sans maillage en utilisant des fonctions radiales de base pour les problèmes de transfert de chaleur conjugués dans un échangeur de chaleur.

Auteurs : WIJAYANTA A. T., PRANOWO

Type d'article : Article, Article de la RIF

Résumé

An understanding of conjugate heat transfer is important for enhancing the thermal performance of heat transfer devices. This study discusses the numerical solutions of the conjugate natural convective heat transfer problem using a local radial basis function meshless method. The temperature difference is assumed to be small enough to ensure the validity of the Boussinesq approximation. An artificial compressibility method is used to couple pressure to the continuity equation. The meshless method requires only one set of nodes, which are distributed in the spatial domain. The semi-algebraic equations are integrated using the second-order Runge–Kutta method. Three benchmark problems of conjugate natural convection with one vertical wall, conjugate natural convection with centrally vertical partition, and natural convection with a conducting solid in the middle of the square cavity are analyzed. The numerical results are compared with three benchmark solutions and experimental results; it was observed that the experimental and predicted results showed good agreement with each other. This numerical study is to contribute to understanding the knowledge of heat and fluid flow mechanisms for conjugate heat transfer in a heat exchanger acquired through experiments.

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Format PDF

Pages : 38-46

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    8,50 €

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Détails

  • Titre original : A localized meshless approach using radial basis functions for conjugate heat transfer problems in a heat exchanger.
  • Identifiant de la fiche : 30027253
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 110
  • Date d'édition : 02/2020
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.10.025

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