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Simulation of air-to-refrigerant fin-and-tube heat exchanger with CFD-based air propagation / Varun Singh in International journal of refrigeration, Vol. 34 N° 8 (Décembre 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 1883–1897 Titre : Simulation of air-to-refrigerant fin-and-tube heat exchanger with CFD-based air propagation Titre original : Simulation d'un échangeur de chaleur air-frigorigène à tubes ailetés à l'aide de la propagation d'air et de la mécanique numérique des fluides Type de document : texte imprimé Auteurs : Varun Singh, Auteur ; Omar Abdelaziz, Auteur ; Vikrant Aute, Auteur Année de publication : 2012 Article en page(s) : pp. 1883–1897 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Heat  exchanger  Condenser  Modeling  Finned  tube  CFD  Hybrid  Simulation Résumé : A new model for simulating air-to-refrigerant fin-and-tube heat exchangers with computational fluid dynamics (CFD)-based air propagation is introduced. This model is based on a segment-by-segment approach and is developed to be a general purpose and flexible simulation tool. The model superimposes a CFD mesh on the heat exchanger model’s geometric grid, interprets the CFD results, and processes them to generate the air propagation path through the heat exchanger. The model is capable of accounting for air flow maldistribution and other complex flow patterns including recirculation zones within the heat exchanger, as well as, entrainment of exit flow into the heat exchanger, using both two-dimensional (2D) and three-dimensional (3D) CFD results. The modeling results show that the overall predicted heat load using 3D-CFD simulation results agrees within ±4% of the experimental data, without employing any multipliers on air side correlations. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001812 [article] Simulation of air-to-refrigerant fin-and-tube heat exchanger with CFD-based air propagation = Simulation d'un échangeur de chaleur air-frigorigène à tubes ailetés à l'aide de la propagation d'air et de la mécanique numérique des fluides [texte imprimé] / Varun Singh, Auteur ; Omar Abdelaziz, Auteur ; Vikrant Aute, Auteur . - 2012 . - pp. 1883–1897. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 1883–1897 Mots-clés : Heat  exchanger  Condenser  Modeling  Finned  tube  CFD  Hybrid  Simulation Résumé : A new model for simulating air-to-refrigerant fin-and-tube heat exchangers with computational fluid dynamics (CFD)-based air propagation is introduced. This model is based on a segment-by-segment approach and is developed to be a general purpose and flexible simulation tool. The model superimposes a CFD mesh on the heat exchanger model’s geometric grid, interprets the CFD results, and processes them to generate the air propagation path through the heat exchanger. The model is capable of accounting for air flow maldistribution and other complex flow patterns including recirculation zones within the heat exchanger, as well as, entrainment of exit flow into the heat exchanger, using both two-dimensional (2D) and three-dimensional (3D) CFD results. The modeling results show that the overall predicted heat load using 3D-CFD simulation results agrees within ±4% of the experimental data, without employing any multipliers on air side correlations. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001812