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Journal of Porous Media

Impact factor: 1.035

ISSN Print: 1091-028X
ISSN Online: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v19.i1.10
pages 1-11

CFD SIMULATION OF FORCED CONVECTIVE HEAT TRANSFER BY TETRAKAIDECAHEDRON MODEL IN METAL FOAMS

Mohammad Zafari
Department of Materials Engineering, Isfahan University of Technology, 84156-83111, Isfahan, Iran
Masoud Panjepour
Department of Materials Engineering, Isfahan University of Technology, 84156-83111, Isfahan, Iran
Mahmood Meratian
Department of Materials Engineering, Isfahan University of Technology, 84156-83111, Isfahan, Iran
Mohsen Davazdah Emami
Department of Mechanical Engineering, Isfahan University of Technology, 84156-83111, Isfahan, Iran

ABSTRACT

Modeling of convective heat transfer within the range of Reynolds number 20−4500 in idealized open cell metal foam with three different pore diameters (2,4, and 6 mm) was performed in this research. Also, the tetrakaidecahedron ideal cell and three-dimensional Reynolds-averaged Navier-Stokes equations (RANS) were employed for the numerical solution of the fluid flow and energy equations in porous media. Visualizing the results showed that an increase in the Reynolds number when passing through the transition zone (according to the friction factor versus Reynolds number diagram, the transition zone determined a range of 60 < ReK < 1000) significantly increases the recirculation region behind the struts. Therefore, by passing through the transition zone and entering the turbulence zone, the convective heat transfer coefficient increased significantly and it would be intensified by the reduction in the pore diameter. Also, the comparison of the results with the available experimental data in the literature confirmed that the above modeling could enjoy good precision in application.