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In high power electronics applications, the most preferred way of thermal management is the use of a heat sink and a fan for active cooling. Though this thermal solution is fairly adequate for the current heat dissipation needs, it suffers from some serious limitations, which may tend to limit its use with time. In the present study, we quantify the limitations of a conventional fan-cooled heat sink...
The effects of vortex generators (VG's) on fluid flow and heat transfer have been studied extensively in the literature. The majority of these studies have examined the effects of using VG's in heat exchanger applications. Other investigations have examined the role of placing VG's in channel flow or on a heated flat plate owing to the fact that these experimental set-ups facilitate easy comparison...
As portable platforms including laptops, handheld PCs, and similar handheld electronics become more powerful and more popular, they present unique thermal management challenges. In the past, most thermal management solutions have dealt with directly cooling the microprocessor by way of a heat spreader, heat sink, and fan. However, the microprocessor thermal solution does not cool all areas of the...
Experiments are carried out to investigate heat transfer enhancement from a heated square cylinder in a channel by pulsating flow. For all the experiments, the amplitude of the pulsating flow is fixed at A = 0.05. The vortex shedding frequency and the time-averaged Nusselt number are measured for various gap height (S/D = 3.5, 2.0, 1.5, 1.0 and 0.75) at Reynolds number Re = 700. The influences of...
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