Effective conductive properties of open-cell foams

Kanaun, S. K.; Tkachenko, Oleksandr

doi:10.1016/j.ijengsci.2008.01.012

Cited by 49 publications

(29 citation statements)

References 14 publications

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“…According to the Plateau's rules, the concave tri-prism ligament structure with a Plateau border and a node joined by four ligaments would very likely form during the natural foaming process, and thus is a relatively more realistic foam ligament structure [21,22]. Kanaun and Tkachenko [23] developed a mathematical model to describe this concave tri-prism foam ligament structure with the Plateau border. With this structure, they numerically calculated the effective conductive properties of open-cell foam materials using the finite element method.…”

Section: Introductionmentioning

confidence: 99%

A new prediction model for the effective thermal conductivity of high porosity open-cell metal foams

Yao

Liu

2015

International Journal of Thermal Sciences

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Section: Introductionmentioning

confidence: 99%

A new prediction model for the effective thermal conductivity of high porosity open-cell metal foams

Yao

Liu

2015

International Journal of Thermal Sciences

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“…Kanaun and Tkachenko 22 took this in account by positioning struts with a parabolic axial shape on an isotropic dry foam. A more detailed study of this axial variation was carried out by Jang et al 44 Three aluminum foams with nearly equal porosity were analyzed by means of lCT scan, with appropriate voxel size (10 lm).…”

Section: Strut Representation and Characteristic Dimensionsmentioning

confidence: 99%

An experimentally validated and parameterized periodic unit-cell reconstruction of open-cell foams

Jaeger

T’Joen

Huisseune

et al. 2011

Journal of Applied Physics

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The physical behavior of open-cell foams depends on their microscopic structure. An open-cell geometrical model is proposed, which can serve as the basis for a future macroscopic analysis. The strut geometry is of particular interest, as it is reported to have substantial influence on the occurring thermo-hydraulic and mechanical phenomena. Axial strut size variation, as well as the porosity dependence of shape is quantified and included in a geometrical model. The foam is generated by placing the struts on an elongated tetrakaidecahedron. The required input parameters for the model are two cell dimensions, corresponding to the mean transverse and conjugate diameters of the ellipse encompassing a cell, and the strut cross-sectional surface area at its midpoint between two nodes. The foam geometry is generated iteratively, as porosity is used as validation. A high resolution micro-computed tomography scan is performed to measure the three parameters, the resulting porosity and surface-to-volume ratio. This allows to validate the model. The predictions are found to be within measurement accuracy. A numerical implementation of the model in the preprocessor of a commercial CFD package is demonstrated.

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“…Computational models of the foams have been used in order to determine the effective properties, e.g., stiffness, [2,3] strength, [4] crushing or fracture behavior, [5] thermal conductivity, [6] and other relevant parameters. [7] Modeling approaches often start with a Voronoi or Laguerre tessalation of sphere packings [8][9][10] from which a foam skeleton can be derived.…”

Section: Introductionmentioning

confidence: 99%

An Approach Toward Numerical Investigation of the Mechanical Behavior of Ceramic Foams during Metal Melt Filtration Processes

et al. 2017

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This article demonstrates an approach for the numerical modeling of open cell ceramic foams, in order to investigate the thermo-mechanical behavior during metal melt filtration processes. The described methods include the creation of the geometric models, the fluid-dynamic simulations of the melt flow using the lattice boltzmann method, and finite element simulations of the ceramic foam under general loads. The paper mainly focuses on the representative geometry generation process, such that the modeled geometry replicates the real foam as far as possible, since high quality models are essential for the quantitative analyses to be reliable. The present parametric studies demonstrate the manner, in which the foam properties may be influenced by changing the geometric and the topological properties, in order to improve the behavior during filtration processes.

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Effective conductive properties of open-cell foams

Cited by 49 publications

References 14 publications

A new prediction model for the effective thermal conductivity of high porosity open-cell metal foams

A new prediction model for the effective thermal conductivity of high porosity open-cell metal foams

An experimentally validated and parameterized periodic unit-cell reconstruction of open-cell foams

An Approach Toward Numerical Investigation of the Mechanical Behavior of Ceramic Foams during Metal Melt Filtration Processes

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