Cooling and thermal management are critical to data center reliability. Many organizations see cooling as a differentiating factor in the lifecycle cost of their data center. Recent industry guidelines [1] for data center cooling have suggested energy savings in air-cooled data centers by increasing the temperature of the cooling air. This increase enables two trends: reduced … [Read more...]
Application of Low Melt Alloys as Compliant Thermal Interface Materials: A Study of Performance and Degradation under Thermal Duress
By: Chandan K. Roy1, Sushil Bhavnani1, Michael C. Hamilton2, R. Wayne Johnson3, Roy W. Knight1, & Daniel K. Harris1 1 Department of Mechanical Engineering, Auburn University, Auburn, AL 2 Department of Electrical and Computer Engineering, Auburn University, Auburn, AL 3Department of Electrical and Computer Engineering, Tennessee Tech University, Cookeville, … [Read more...]
Organically Grown 3D Printable Heatsinks – Part 4 A Fully Automated Methodology
The additive design methodology itself is quite straightforward. It is however highly repetitive. Perform a simulation, identify a maximum temperature location, extend the geometry at that point, if thermal efficiency decreases then repeat. To appreciate and to evolve the approach I began by manually performing a number of the initial steps myself. Solve in FloTHERM, sort … [Read more...]
Organically Grown 3D Printable Heatsinks – Part 3 Smoothing the Edges
The shape of the small piece of geometry that is added so as to successively ‘relieve’ the design determines the overall ‘jaggedness’ of the final geometry. A square section rod can only lead to a stair-stepped representation of angled portions of the shape, at worse resulting in a 41% increase (2/root2) in surface area in those regions. Increase in surface area, thus … [Read more...]
Organically Grown 3D Printable Heatsinks – Part 2 Trunks and Branches
Adrian Bejan’s Constructal Law states: “For a finite-size system to persist in time (to live), it must evolve in such a way that it provides easier access to the imposed currents that flow through it.” This can be seen at play in both animate and inanimate systems, from trees to lighting, from river systems to lungs. Such persistent systems tend to carry something … [Read more...]
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