... properties of graphite foams are oversimplified. In particular, it has been found that the dispersion conductivity is not well characterized using the Péclet number alone, rather the Reynolds and Prandtl numbers must be considered as separate influences. Additionally, the convecting velocity modification...

...Yogendra Joshi; Mohamed-Nabil Sabry 07 03 2011 07 03 2011 convection cooling foams heat sinks microfabrication micromechanical devices two-phase flow This special issue of the Journal of Heat Transfer contains six papers selected out of the 53 presented at the Second...

...K. C. Leong; H. Y. Li; L. W. Jin; J. C. Chai Highly conductive porous media have recently been considered for enhanced cooling applications due to their large internal contact surface area, which promotes convection at the pore level. In this paper, graphite foams that possess high thermal...

...W. Wu; J. H. Du; Y. R. Lin; L. C. Chow; H. Bostanci; B. A. Saarloos; D. P. Rini This study investigates a V-shaped corrugated carbon foam heat sink for thermal management of electronics with forced air convection. Experiments were conducted to determine the heat sink performance in terms of heat...

...Patrick T. Garrity; James F. Klausner; Renwei Mei The air side heat transfer performance of three aluminum foam samples and three modified carbon foam samples are examined for comparison with multilouvered fins often found in compact heat exchangers. The aluminum foam samples have a bulk density...

...Y. R. Lin; J. H. Du; W. Wu; L. C. Chow; W. Notardonato This work focuses on the development of high-effectiveness recuperative heat exchangers using solid and corrugated carbon foam blocks. Characterization tests were conducted on heat transfer and pressure drop for a single carbon foam block...

...S. A. Mohsen Karimian; Anthony G. Straatman To investigate the feasibility of the use of foams with an interconnected spherical pore structure in heat transfer applications, models for heat transfer and pressure drop for this type of porous materials are developed. Numerical simulations are carried...

...Coquard Rémi; Baillis Dominique; Quenard Daniel Expanded polystyrene foams are one of the most widely used materials for a building’s thermal insulation. Owing to their very low density, a substantial proportion of the heat transfer is due to thermal radiation propagating through their porous...

...Robert J. Moffat; John K. Eaton; Andrew Onstad Metallic and graphitic open-cell foams are being used or proposed as extended surfaces (fins) in heat sinks for electronic cooling and compact heat exchangers for aircraft applications. Three parameters must be known to calculate the heat transfer...

...Ali Siahpush; James O’Brien; John Crepeau A detailed experimental and analytical study has been performed to evaluate how copper porous foam (CPF) enhances the heat transfer performance in a cylindrical solid/liquid phase change thermal energy storage system. The CPF used in this study had a 95...

... objective of this experimental study is to quantify and compare the heat transfer enhancement of carbon foam and aluminum fins. The study measures the heat transfer rate and pressure drop from a heated vertical pipe, with and without porous medium, in forced convection. The largest increase in Nusselt...

...Qijun Yu; Brian E. Thompson; Anthony G. Straatman A unit-cube geometry model is proposed to characterize the internal structure of porous carbon foam. The unit-cube model is based on interconnected sphere-centered cubes, where the interconnected spheres represent the fluid or void phase. The unit...

...Mark J. Varady, Grad. Res. Assistant; Andrei G. Fedorov, Asst. Prof. Understanding of heat transfer in glass foams and the development of theoretical tools for predicting heat transfer properties of glass foams is critical to improving the efficiency of glass manufacturing. In this paper, combined...

...J.-J. Hwang, Mem. ASME; G.-J. Hwang, Fellow ASME; R.-H. Yeh; C.-H. Chao Convective heat transfer and friction drag in a duct inserted with aluminum foams have been studied experimentally. The combined effects of foam porosity (ε=0.7, 0.8, and 0.95) and flow Reynolds number (1900⩽Re⩽7800...