Proceedings ArticleDOI
Thermal performance of an elliptical pin fin heat sink
C.L. Chapman,S. Lee,B.L. Schmidt +2 more
- pp 24-31
TLDR
In this article, the performance of the elliptical pin heat sink was compared with those of extruded straight and crosscut fin heat sinks, all designed for an ASIC chip, and the results of the straight fin were also compared by using Sauna, a commercially available heat sink modeling program developed based on empirical expressions.Abstract:
Comparative thermal tests have been carried out using, aluminum heat sinks made with extruded fin, cross-cut rectangular pins, and elliptical shaped pins in low air flow environments. The elliptical pin heat sink was designed to minimize the pressure loss across the heat sink by reducing the vortex effects and to enhance the thermal performance by maintaining large exposed surface area available for heat transfer. The performance of the elliptical pin heat sink was compared with those of extruded straight and crosscut fin heat sinks, all designed for an ASIC chip. The results of the straight fin were also compared with those obtained by using Sauna, a commercially available heat sink modeling program developed based on empirical expressions. In addition to the thermal measurements, the effect of air flow bypass characteristics in open duct configuration was investigated. As expected, the straight fin experienced the lowest amount of flow bypass over the heat sink. For this particular application, where the heat source is localized at the center of the heat sink base plate, the overall thermal resistance of the straight fin was lower than the other two designs mainly due to the combined effect of enhanced lateral conduction along the fins and the lower flow bypass characteristics. >read more
Citations
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Journal ArticleDOI
Modeling of the thermal and hydraulic performance of plate fin, strip fin, and pin fin heat sinks-influence of flow bypass
H. Jonsson,Bahram Moshfegh +1 more
TL;DR: In this paper, a wind tunnel test with seven types of heat sinks including plate fin, strip fin, and pin fin heat sinks was conducted in order to evaluate the Nusselt number and dimensionless pressure drop.
Journal ArticleDOI
Numerical Evaluation of Flow and Heat Transfer in Plate-Pin Fin Heat Sinks with Various Pin Cross-Sections
Feng Zhou,Ivan Catton +1 more
TL;DR: In this paper, a numerical investigation of the thermal and hydraulic performance of 20 different plate-pin fin heat sinks with various shapes of pin cross-sections (square, circular, elliptic, NACA profile, and dropform) and different ratios of pin widths to plate fin spacing was performed.
Journal ArticleDOI
Experimental optimization of confined air jet impingement on a pin fin heat sink
TL;DR: In this paper, a variety of nozzle configurations were tested to characterize and optimize the performance of confined impinging air jets used in conjunction with a pin-fin heat sink, and the results showed that the heat transfer coefficients and thermal resistance values were reported for the heat sink as a function of Reynolds number, air flow rate, pumping power, and pressure drop.
Journal ArticleDOI
A Review of Recent Developments in Some Practical Aspects of Air-Cooled Electronic Packages
Sanjeev B. Sathe,Bahgat Sammakia +1 more
TL;DR: In certain applications the card heat-sinking effect can play a major role in the thermal management of a package, accounting for more than 50 percent of the total power dissipation of the package.
References
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Book
Fundamentals of Heat and Mass Transfer
TL;DR: This paper introduced the physical effects underlying heat and mass transfer phenomena and developed methodologies for solving a variety of real-world problems, such as energy minimization, mass transfer, and energy maximization.
Book
Handbook of hydraulic resistance
TL;DR: In this paper, pertes de : charge, frottement, incompressible, ecoulement, interne reference record created on 2005-11-18, modified on 2016-08-08
Book
Compact Heat Exchangers
TL;DR: In this paper, basic ϵon-N{sub tu} analysis for complicated flow arrangements, single-phase heat transfer and pressure drop measurements, correlations and predictions, and applications of compact heat exchangers are discussed.
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