University of Surrey

Test tubes in the lab Research in the ATI Dance Research

On the design of two-dimensional Cellular metals for combined heat dissipation and structural load capacity

Gu, S, Lu, TJ and Evans, AG (2001) On the design of two-dimensional Cellular metals for combined heat dissipation and structural load capacity International Journal of Heat and Mass Transfer, 44 (11, Ju). pp. 2163-2175.

Full text not available from this repository.


Sandwich panels with two-dimensional metal cores can be used to carry structural load as well as dissipate heat through solid conduction and forced convection. This work attempts to uncover the nature of heat transfer in these lightweight systems, with emphasis on the effects of varying cell morphologies and cell arrangements. The types of cell shape and cell arrangement considered include regular hexagon, square with connectivity 4 or 3, and triangle with connectivity 6 or 4. Two analytical models are developed: corrugated wall and effective medium. The former models the cellular structure in detail whilst, the latter models the fluid saturated porous structure using volume averaging techniques. The overall heat transfer coefficient and pressure drop are obtained as functions of relative density, cell shape, cell arrangement, fluid properties, and overall dimensions of the heat sink. A two-stage optimization is subsequently carried out to identify cell morphologies that optimize the structural and heat transfer performance at specified pumping power and at lowest weight. In the first stage, the overall heat transfer performance is optimized against relative density. Regular hexagonal cells are found to provide the highest levels of heat dissipation. In the second stage, a constraint on stiffness is added. It is then found that, for panels with thin cores, triangular cells constitute the most compact and yet stiff heat sink design; however, for high heat flux scenarios, hexagonal cells outperform triangular and square cells.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Lu, TJ
Evans, AG
Date : 2 March 2001
Funders : UK EPSRC, ARPA/ONR MURI program on Ultralight Metal Structures, USA
DOI : 10.1016/S0017-9310(00)00234-9
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:51
Last Modified : 25 Jan 2020 00:27

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800