Thermal conductivity bounds for isotropic, porous materials

Carson, James K.; Lovatt, S. J.; Tanner, David J.; Cleland, A. C.

doi:10.1016/j.ijheatmasstransfer.2004.12.032

Cited by 542 publications

(319 citation statements)

References 26 publications

(37 reference statements)

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“…Atabaki and Baliga [124] reviewed several thermal conductivity models for two-phase mixtures and developed a modified empirical correlation based on experimental data for sintered metal powders [123,124]. Similar testing of biporous and monoporous sintered copper powders performed by Catton and coworkers [64,125] revealed that the effective medium theory model [126] discussed by Carson et al [127], which assumes a random dispersion of both material phases, provides an upper bound on effective thermal conductivity. Li and Peterson [128] reviewed models for predicting the effective conductivity of layers of wire screen, and performed experiments using sintered screen to validate a proposed analytical model as a function of the mesh number and wire diameter.…”

Section: Empirical Characterizationmentioning

confidence: 97%

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Weibel

Garimella

2013

Advances in Heat Transfer

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Owing to their high reliability, simplicity of manufacture, passive operation, and effective heat transport, flat heat pipes and vapor chambers are used extensively in the thermal management of electronic devices. The need for concurrent size, weight, and performance improvements in high-performance electronics systems, without resort to active liquid-cooling strategies, demands passive heat spreading technologies that can dissipate extremely high heat fluxes from small hot spots. In response to these daunting application-driven trends, a number of recent investigations have focused on the design, characterization, and fabrication of ultra-thin vapor chambers for proximate heat spreading away from these hot spots. The predominant transport mechanisms and operational limits have been found to be different under these conditions relative to conventional low-power heat pipes. Noteworthy advances in the fundamental understanding of evaporation and boiling from porous microstructures fed by capillary action, and improvements in vapor chamber characterization, modeling, design, and fabrication techniques are reviewed. Characterization of evaporation and boiling from idealized and realistic wick structures, observation of vapor formation regimes as a function of operating conditions, assessment of fluid dryout limitations, design of novel multi-scale and nanostructured wicks for enhanced transport, and incorporation of these high heat flux transport phenomena into device-level models are discussed. These recent developments have successfully extended the maximum operating heat flux limits of vapor chambers.2

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Section: Empirical Characterizationmentioning

confidence: 97%

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Weibel

Garimella

2013

Advances in Heat Transfer

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“…Several analytical models for the estimation of thermal conductivity of heterogeneous materials exist (Progelhof et al, 1976;Carson et al, 2005;Wang et al, 2006) and can be applied to gas diffusion layers. In the following, the most fundamental models -parallel model, series model, Maxwell Eucken model, effective medium theory model and cocontinous model -are presented.…”

Section: Estimation Of Thermal Conductivity Of Heterogeneous Materialsmentioning

confidence: 99%

“…The effective medium theory (EMT) model (see equation (4)) assumes a random, mutual dispersion of two components (Carson et al, 2005).…”

Section: Estimation Of Thermal Conductivity Of Heterogeneous Materialsmentioning

confidence: 99%

Computation of Thermal Conductivity of Gas Diffusion Layers of PEM Fuel Cells

Pfrang¹,

Veyret²,

Tsotridis³

2011

Convection and Conduction Heat Transfer

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“…If the lattice consists of only graphite, tally is done over the lattice cubical volume. 20 shows the temperature distributions obtained from the Monte Carlo method compared to the two analytic bound solutions superimposed with a particle located at the center of the pebble based on commonly quoted homogenized models [16]. It is important to note that the volumetric analytic solution usually presented in the literature [17] predicts lower temperatures than those of (thus underestimates) the Monte Carlo results.…”

Section: Comparison Between the Fls (Fine Lattice Stochastic) Model Amentioning

confidence: 99%

Particle Transport Monte Carlo Method for Heat Conduction Problems

Cho¹

2011

Heat Conduction - Basic Research

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Thermal conductivity bounds for isotropic, porous materials

Cited by 542 publications

References 26 publications

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Recent Advances in Vapor Chamber Transport Characterization for High-Heat-Flux Applications

Computation of Thermal Conductivity of Gas Diffusion Layers of PEM Fuel Cells

Particle Transport Monte Carlo Method for Heat Conduction Problems

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