Abstract
In the present study, hydrofoil ribs made from NACA 2412 profile were mounted in a novel way at all walls of microchannel heat sink with various configurations to improve its thermo-hydraulic characteristics. The various configurations include comparison between staggered and aligned arrangements, and the variation of rib spacing between two consecutive hydrofoils (Sr = 0.2–0.6 mm) at a constant cord length (Cr = 0.4 mm). The study was performed with the help of commercially available computational fluid dynamics tool, ANSYS Fluent. The performance of various configurations were compared with each other and with smooth channel using parameters like friction factor (f), Nusselt number (Nu), and overall performance is determined by thermal enhancement factor ( $\eta$ ). The results of this study showed that the best performance is achieved by the configuration where rib spacing becomes equal to cord length (Sr = 0.4 mm). Moreover, it has been observed in this study that staggered configuration performed better than aligned configuration.
Highlights
In today’s electronic systems, the removal of the dissipated heat from microelectronic systems is a big problem due to the decrease in the size of electronic products and devices
In this study, hydrofoil ribs having NACA 2412 profile were mounted in a novel way at all walls of microchannel heat sink with various configurations to improve its thermo-hydraulic characteristics
The results showed that the best performance is achieved by the configuration where rib spacing became equal to cord length (Sr = 400 μm)
Summary
In today’s electronic systems, the removal of the dissipated heat from microelectronic systems is a big problem due to the decrease in the size of electronic products and devices. In one research some scientist finds out by comparing Smooth MCHS and Pin Fin MCHS of copper with singlephase water flow both having the height of 670 μm and width of 200 μm that for Re < 2400 the pin fins did not show significant thermal enhancement but for flows Re > 2400 Pin fins Shows good thermal performance results But at the cost of pressure drop twice as large as that of the pressure drop of smooth MCHS and increased significantly with the increase in Reynold number. Its effects on the thermal and hydraulic properties of MCHS in terms of Nusselt Number (Nu), friction factor (f), and thermal enhancement factor (ƞ) will be investigated
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