Forced Convection in High Porosity Metal Foams

doi:10.1115/1.1287793

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Forced Convection in High Porosity Metal Foams

Journal Article•DOI•

Forced Convection in High Porosity Metal Foams

V. V. Calmidi¹, Roop L. Mahajan¹•Institutions (1)

01 Aug 2000-Journal of Heat Transfer-transactions of The Asme (American Society of Mechanical Engineers)-Vol. 122, Iss: 3, pp 557-565

TL;DR: In this paper, an experimental and numerical study of forced convection in high porosity (e∼0.89-0.97) metal foams was conducted using air as the fluid medium.

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Abstract: We report an experimental and numerical study of forced convection in high porosity (e∼0.89-0.97) metal foams. Experiments have been conducted with aluminum metal foams in a variety of porosities and pore densities using air as the fluid medium. Nusselt number data has been obtained as a function of the pore Reynolds number. In the numerical study, a semi-empirical volume-averaged form of the governing equations is used. The velocity profile is obtained by adapting an exact solution to the momentum equation. The energy transport is modeled without invoking the assumption of local thermal equilibrium. Models for the thermal dispersion conductivity, k d , and the interstitial heat transfer coefficient, h sf , are postulated based on physical arguments. The empirical constants in these models are determined by matching the numerical results with the experimental data obtained in this study as well as those in the open literature. Excellent agreement is achieved in the entire range of the parameters studied, indicating that the proposed treatment is sufficient to model forced convection in metal foams for most practical applications

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Journal Article•DOI•

Metal foams as compact high performance heat exchangers

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Kevin Boomsma¹, Dimos Poulikakos¹, F. Zwick•Institutions (1)

École Polytechnique Fédérale de Lausanne¹

01 Dec 2003-Mechanics of Materials

TL;DR: In this paper, open-cell metal foams with an average cell diameter of 2.3 mm were manufactured from 6101-T6 aluminum alloy and were compressed and fashioned into compact heat exchangers.

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681 citations

Cites methods from "Forced Convection in High Porosity ..."

...There currently exist analytical (du Plessis et al., 1994; Diedericks and du Plessis, 1997; Smit and du Plessis, 1999; Lu et al., 1998) and numerical models ( Calmidi and Mahajan, 2000; Lage et al., 1996) for the fluid flow and heat transfer in packed beds of spheres and extensive databanks of fluid flow and heat transfer experiments used as verification of these models (Antohe et al., 1997; Lage et al., 1997; Lage and Antohe, 2000; Boomsma ......
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Journal Article•DOI•

Heat transfer enhancement for thermal energy storage using metal foams embedded within phase change materials (PCMs)

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Changying Zhao¹, W. Lu¹, Yuan Tian¹•Institutions (1)

University of Warwick¹

01 Aug 2010-Solar Energy

TL;DR: In this paper, the effect of metal foams on solid/liquid phase change heat transfer is investigated, and the results show that the use of metal foam can make the sample solidified much faster than pure PCM samples, evidenced by the solidification time being reduced by more than half.

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620 citations

Cites background from "Forced Convection in High Porosity ..."

...…worked on the thermal conduction (Calmidi and Mahajan 1999, Boomsma and Poulikakos 2001, Zhao et al. 2004), forced convection (Lee et al. 1993, Calmidi and Mahajan 2000, Kim et al. 2000, Kim et al. 2001, Hwang et al. 2002, Bhattacharya et al. 2002, Zhao et al 2004, Zhao et al 2005, Phanikumar…...
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Journal Article•DOI•

A review of the composite phase change materials: Fabrication, characterization, mathematical modeling and application to performance enhancement

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Peng Zhang¹, Xin Xiao¹, Zhiwei Ma¹•Institutions (1)

Shanghai Jiao Tong University¹

01 Mar 2016-Applied Energy

TL;DR: In this paper, a review of the recent progress of the investigations and applications of composite phase change materials with the enhanced performance is presented, where the focus is placed on the composite PCMs fabricated by using the metal foams and carbon materials, which have proved to be the most promising approaches for thermal conductivity and heat transfer promotion on PCMs.

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401 citations

Journal Article•DOI•

Review on thermal transport in high porosity cellular metal foams with open cells

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Changying Zhao¹•Institutions (1)

Shanghai Jiao Tong University¹

01 Jun 2012-International Journal of Heat and Mass Transfer

TL;DR: In this paper, the state-of-the-art knowledge and research results of thermal transport in open celled cellular metal foams, which covers the effective thermal conductivity, forced convection, natural convection and thermal radiation, pool boiling and flow boiling heat transfer, solid/liquid phase change heat transfer and catalytic reactor were provided.

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374 citations

Journal Article•DOI•

A numerical investigation of heat transfer in phase change materials (PCMs) embedded in porous metals

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Yuan Tian¹, Changying Zhao²•Institutions (2)

University of Warwick¹, Shanghai Jiao Tong University²

01 Sep 2011-Energy

TL;DR: In this article, the effects of metal foams on heat transfer enhancement in phase change materials (PCMs) are investigated based on the two-equation non-equilibrium heat transfer model, in which the coupled heat conduction and natural convection are considered at phase transition and liquid zones.

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356 citations

Cites background or methods from "Forced Convection in High Porosity ..."

...Calmidi and Mahajan [20, 22] presented a 2D simplified model of effective thermal conductivity for metal foams, which gave good agreement with test data....
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...The values of these parameters for metal foam microstructures are obtained by employing the model by Calmidi and Mahajan [20, 22]....
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...The formula presented by Calmidi and Mahajan [22] is given in Eq....
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...It is important to note that metal foams have much higher porosity (usually at least 90%) than packed beds (usually in the range of 40%–60%) [22]....
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...The detailed derivation of all other parameters is given in [20, 22, 28]....
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References

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Book•

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TL;DR: In this article, the authors identify the principles of transport in porous media and compare the available predicted results, based on theoretical treatments of various transport mechanisms, with the existing experimental results, and the theoretical treatment is based on the volume-averaging of the momentum and energy equations with the closure conditions necessary for obtaining solutions.

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Abstract: Although the empirical treatment of fluid flow and heat transfer in porous media is over a century old, only in the last three decades has the transport in these heterogeneous systems been addressed in detail. So far, single-phase flows in porous media have been treated or at least formulated satisfactorily, while the subject of two-phase flow and the related heat-transfer in porous media is still in its infancy. This book identifies the principles of transport in porous media and compares the available predicted results, based on theoretical treatments of various transport mechanisms, with the existing experimental results. The theoretical treatment is based on the volume-averaging of the momentum and energy equations with the closure conditions necessary for obtaining solutions. While emphasizing a basic understanding of heat transfer in porous media, this book does not ignore the need for predictive tools; whenever a rigorous theoretical treatment of a phenomena is not available, semi-empirical and empirical treatments are given.

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Abstract: Note: Bibliogr. en fin de chapitres. Index Reference Record created on 2004-09-07, modified on 2016-08-08

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