Affiliation:
1. University of Virginia
Abstract
Numerous methods have recently emerged for fabricating cellular lattice structures with
unit cells that can be repeated to create 3D space filling systems with very high interconnected pore
fractions. These lattice structures possess exceptional mechanical strength resulting in highly
efficient load supporting systems when configured as the cores of sandwich panels. These same
structures also provide interesting possibilities for cross flow heat exchange. In this scenario, heat is
transported from a locally heated facesheet through the lattice structure by conduction and is
dissipated by a cross flow that propagates through the low flow resistant pore passages. The
combination of efficient thermal conduction along the lattice trusses and low flow resistance through
the pore channels results in highly efficient cross flow heat exchange. Recent research is investigating
the use of hollow truss structures that enable their simultaneous use as heat pipes which significantly
increases the efficiency of heat transport through the lattice and their mechanical strength. The
relationships between heat transfer, frictional flow losses and topology of the lattice structure are
discussed and opportunities for future developments identified.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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