Peter Rodgers Fan modelling is one of the most critical aspects of the analysis of forced-air-cooled systems. Lasance [1] summarized the challenges of modeling air movers such as fans and key factors that need to be taken into consideration. Such factors include the need to model the fan hub, and to account for the swirl velocity coefficient. In addition to the above … [Read more...]
All You Need to Know About Fans
By Mike Turner, Comair Rotron A Basic Fan/Blower Description Fans can be thought of as low pressure air pumps that utilize power from a motor to output a volumetric flow of air at a given pressure. A propeller converts torque from the motor to increase static pressure across the fan rotor and to increase the kinetic energy of the air particles. The motors are typically … [Read more...]
Effective Heat Spreading Angle
Dirk Schweitzer, Infineon Technologies AG, Am Campeon 1-12, 85579 Neubiberg, Germany dirk.schweitzer@infineon.com Introduction To accurately compute the thermal resistance of a layered structure, such as the Junction-to-Case thermal resistance of a power semiconductor, the heat spreading inside the structure has to be considered. The calculation of the spreading resistance is … [Read more...]
An Efficient Approach for MULTI-SCALE Thermal Modeling of Integrated Circuits
Banafsheh Barabadi, Satish Kumar, Valeriy Sukharev, & Yogendra K. Joshi Banafsheh Barabadi Department of Mechanical Engineering Massachusetts Institute of Technology 77 Massachusetts Ave. Cambridge MA 02139 Yogendra K. Joshi Satish Kumar G.W. Woodruff School of Mechanical Engineering Georgia Institute of Technology 801 Ferst Dr, Atlanta GA 30332 Valeriy … [Read more...]
An Additive Design Methodology for Heatsink Geometry Topology Identification
Introduction Established heatsink manufacturing processes such as extrusion, casting and milling constrain the achievable topology and geometry of the heatsink. The advent of metallic 3D printing (additive manufacture) processes such as selective laser melting (SLM) may remove many of these constraints, forcing the designer to reconsider the approach taken to determine a … [Read more...]
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