THERMAL SCIENCE
International Scientific Journal
THERMAL PROPERTIES OF CLOSED-CELL ALUMINUM FOAM WITH CIRCULAR PORES
ABSTRACT
The thermal property of closed-cell aluminum foam is studied numerically and the effects of the distribution of the circular pore on the thermal property are studied theoretically. When the convection and radiation are ignored, the effects of porosity, cell size, and distribution forms of pore on the apparent thermal conductivity are investigated. Moreover, the effects of air in the pore on the thermal property are analyzed as well. Simulation results show that apparent thermal conductivity linearly increases with the increase of porosity, while the cell size and the distribution have negligible effects on the thermal property. By comparison, thermal conductivity of air has slight effect on thermal property of foamed aluminum in the context of small size pore.
KEYWORDS
PAPER SUBMITTED: 2014-03-26
PAPER REVISED: 2014-05-05
PAPER ACCEPTED: 2014-07-12
PUBLISHED ONLINE: 2015-01-04
THERMAL SCIENCE YEAR
2014, VOLUME
18, ISSUE
Issue 5, PAGES [1619 - 1624]
- Gibson, L. J., Ashby, M. F., Cellular Solids: Structure and Properties, 2nd ed. Cambridge University Press, Cambridge, UK, 1997
- Evans, A. G., Lightweight Materials and Structures, Mater. Res. Bull, 26 (2001), 10, pp. 790-797
- Montanini, R., Measurement of Strain Rate Sensitivity of Aluminum Foams for Energy Dissipation, International Journal of Mechanical Science, 47 (2005), 1, pp. 26-42
- Mangipudi, K. R., Onck, P. R., Multiscale Modeling of Damage and Failure in Two-Dimensional Metallic Foams, Journal of the Mechanics and Physics of Solids, 59 (2011), 7, pp. 1437-1461
- Mukai, T., et al., Experimental Study of Energy Absorption in a Close-Celled Aluminum Foam under Dynamic Loading, Scripta Materialia, 40 (1999), 8, pp. 921-927
- Rayleigh, L., On the Influence of Obstacles Arranged in Rectangular Order upon the Properties of a Medium, Philos Mag, 34 (1892), 211, pp. 481-502
- Hunt, M. L., Tien, C. L., Effects of Thermal Dispersion on Forced Convection in Fibrous Media, Int. J. Heat Mass Transfer, 31 (1988), 2, pp. 301-309
- Tien, C. L., Vafai, K., Statistical Bounds for the Effective Thermal Conductivity of Microsphere and Fibrous Insulation, Reston, Va., USA, 1979, pp. 135-148
- Lu, T. J., Chen, C., Thermal Transport and Fire Retardance Properties of Cellular Aluminium Alloys, Acta. Mater, 47 (1999), 5, pp. 1469-1485
- Lu, K. T., Kou, H. S., The Effective Thermal Conductivity of Porous Material with Spherical Inclusions in a Tetragonal or Simple Cubic Array, Int. Commun. Heat. Mass, 20 (1993), 4, pp. 489-500
- Hosseini, S. M. H, Numerical Prediction of the Effective Thermal Conductivity of Open- and Closed- Cell Foam Structures, Defect and Diffusion Forum, 297-301 (2010), pp. 1210-1217
- Fiedler, T., Recent Advances in the Prediction of the Thermal Properties of Syntactic Metallic Hollow Sphere Structures, Adv. Eng. Mater, 10 (2008), 4, pp. 1-30
- Zhang, H, et al., Digital Image Analysis of Foamed Aluminium's Microstructure and Its Distribution (in Chinese), Journal of South China University of Technology, 32 (2004), 1, pp. 9-13