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HEAT TRANSFER ENHANCEMENT IN OPEN-CELL FOAMS

DOI: 10.1615/AnnualRevHeatTransfer.2017017615
pages 317-366

Nicola Bianco
Dipartimento di Ingegneria Industriale, Università degli studi di Napoli Federico II, P.le Tecchio 80, 80125, Napoli, Italy

Gaetano Contento
Italian National Agency for New Technologies, Energy and Sustainable Economical Development Brindisi Research Centre (ENEA), 72100, Brindisi, Italy

Salvatore Cunsolo
Dipartimento di Ingegneria Industriale, Università degli Studi di Napoli Federico II, Napoli, Italy; LaMCos, INSA-Lyon, UMR CNRS 5259, Villeurbanne, France

Marcello Iasiello
Dipartimento di Ingegneria Industriale, Università degli studi di Napoli Federico II, P.le Tecchio 80, 80125, Napoli, Italy

Vincenzo Naso
Dipartimento di Ingegneria Industriale, Università degli studi di Napoli Federico II, P.le Tecchio 80, 80125, Napoli, Italy

Maria Oliviero
Consiglio Nazionale delle Ricerche, Istituto per i Polimeri, Compositi e Biomedici, P.le Fermi 1, 80055 Portici, Italy


SCHLÜSSELWÖRTER: Porous media, Open-cell foam, Foam morphology, Pore scale analysis, Discrete- Continue models, Pressure drop, Volumetric solar air receiver, Heat exchangers

Abstrakt

Fields of applications of foams and the state-of-art, with particular reference to heat exchangers and solar air receivers, are first presented. The characteristics of open-cell foams are then defined and their complex morphology is described. Manufacturing routes of real foams are presented. Physical laws that regulate foaming process and correlations among morphological parameters are presented. Macroscopic and microscopic modeling of foams are reviewed. With reference to the macroscopic approach, governing equations written with the volume averaging technique (VAT) are presented. The microscopic approach allows one to obtain closing coefficients for the macroscopic governing equations. Fluid dynamics and heat transfer mechanisms at the microscopic scale are reviewed. Experimental and numerical investigations on fluid dynamics and heat transfer are presented.

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