CFD characterization of flow regimes inside open cell foam substrates

Torre, Augusto Della; Montenegro, Gianluca; Tabor, Gavin; Wears, M.L.

doi:10.1016/j.ijheatfluidflow.2014.05.005

Cited by 88 publications

(38 citation statements)

References 27 publications

(31 reference statements)

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“…featuring the gradual velocity variation from the maximum value to zero toward the pore walls with a parabolic velocity profile across the pores. This behavior can be explained by the dominance of the viscous force over the inertial force in Darcy regime [36,48]. Such dissipative viscous mechanism is similar to that observed for laminar flow in the open-cell structures of idealised foams [36] and Kelvin cells [29].…”

Section: Cfd Simulation Of Steady-state Laminar Flow Through ˇ-Sic Opmentioning

confidence: 56%

“…X-ray microcomputed tomography ( -CT) enables to capture and reconstruct the complex structure of porous media in accurate details [34][35][36][37]. Thus, simulations with realistic representations of metal opencell foams were carried out using finite element method for the analysis of heat transfer properties of metal foams [34,[37][38][39].…”

Section: G Modelmentioning

confidence: 99%

“…Findings of computational studies can be used to correct empirical correlations for predicting the effective thermal conductivity of foam-based devices [38]. Only few numerical investigations using the microtomography-based modelling and simulation approaches examining the fluid domain within the open-cell structures have been published to date [34,36,37]. Such direct modelling and simulations of real foam geometries are particularly beneficial for reducing the demands for experiments and for successful design of chemical processes based on foam materials.…”

Section: G Modelmentioning

confidence: 99%

See 2 more Smart Citations

Microtomography-based numerical simulations of heat transfer and fluid flow through β -SiC open-cell foams for catalysis

Fan

Xing

et al. 2016

Catalysis Today

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show abstract

Section: Cfd Simulation Of Steady-state Laminar Flow Through ˇ-Sic Opmentioning

confidence: 56%

Section: G Modelmentioning

confidence: 99%

Section: G Modelmentioning

confidence: 99%

See 1 more Smart Citation

Microtomography-based numerical simulations of heat transfer and fluid flow through β -SiC open-cell foams for catalysis

Fan

Xing

et al. 2016

Catalysis Today

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show abstract

“…On this basis, the algorithm reconstructs the void space with a set of regular spherical elements characterized by different diameters. For a foam, the typical diameter distribution exhibits two distinct maxima related to the size of the pore and of the window [50]. Statistical analysis of the void size distribution allows to provide mean value and standard deviation for the cell and pore dimension.…”

Section: Algorithm For the Geometrical Analysismentioning

confidence: 99%

Comparison of geometrical, momentum and mass transfer characteristics of real foams to Kelvin cell lattices for catalyst applications

Lucci

Torre

Montenegro

et al. 2017

International Journal of Heat and Mass Transfer

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Open cell foams are considered promising catalytic substrates providing high surface area and a tortuous structure resulting in enhanced mass transfer characteristics. CFD analysis, recently, has focused in pointing structures with favourable reactivity-flow resistance characteristics. In order to reduce the geometrical complexity and computational efforts, foams have been modelled as regular (polyhedric) open cell structures. In this study a comprehensive comparison of real foams with equivalent Kelvin cell lattices is performed in CFD. Therefore 4 typical foams (two ceramic and two metallic) have been chosen. Geometric properties have been accessed with Micro-Tomography scans. Randomised Kelvin cell lattices have been generated matching porosity and specific surface area of the scanned real foams. Geometric, momentum and mass transfer characteristics of real foams and Kelvin cell lattices are analysed with CFD. Kelvin cell lattices showed similar behaviour in respect to their real foam equivalents, had though clearly better reactivity-pressure drop trade-offs. Based on the results presented best performances as a catalyst can be expected by 3D printed, additive manufactured, high porosity polyhedric structures

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“…Della Torre et al [8] used μ-CT scan to study the micro-structure of the foam. Mathematical calculations based on the CT scan model were compared with numerical computations of an ideal geometry.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fin Orientation and Forced Convection on the Performance of Metal Foam Fins using a μ-CT Scan Based 3D CFD Model

Al-Athel¹,

Al-Harbi²

2017

METF

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Abstract. Metal foams are very attractive materials for thermal and electronic packaging applications due to their improved heat transfer capabilities. Their improved heat transfer effective properties are due to the relatively large contact area they possess because of their cell structure. This comes at the expense of the pressure drop. This work presents a methodology based on μ-CT scan to develop a realistic metal foam 3D model. The model is validated with experiments and used to study the behavior of the metal foam as a fin in terms of the temperature variation within the fin as well as the effect of the airflow velocity and fin orientation to the pressure drop. Results showed two major observations. First, this methodology could be used to identify a velocity value at which the fin orientation becomes obsolete and has no effect on the temperature variation. Second, the pressure drop alone could not be used to assess the fin, but also the fin orientation has to be taken into account to examine the total pressure drop.

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CFD characterization of flow regimes inside open cell foam substrates

Cited by 88 publications

References 27 publications

Microtomography-based numerical simulations of heat transfer and fluid flow through β -SiC open-cell foams for catalysis

Microtomography-based numerical simulations of heat transfer and fluid flow through β -SiC open-cell foams for catalysis

Comparison of geometrical, momentum and mass transfer characteristics of real foams to Kelvin cell lattices for catalyst applications

Effect of Fin Orientation and Forced Convection on the Performance of Metal Foam Fins using a μ-CT Scan Based 3D CFD Model

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