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Effect of Arc Shaped Bar on Heat Transfer and Fluid Characteristics at Cooling of Electronic Equipment

Abstract

The high heat flux from electronic devices such as projectors, LEDs, or high power chips requires effective cooling methods at heat dissipation in a limited space. In the present study, the heat and fluid flow characteristics of isothermally heated objects located in a duct were numerically analyzed in order to investigate cooling of electronic devices. The channel had three objects attached to its bottom wall. The numerical computations were performed by solving two-dimensional steady laminar governing equations using the Fluent 17.0 program. Air moving with uniform velocity was taken as the cooling working fluid in the duct. A triangular arc shaped cross-section part was used as a control element. The top and bottom walls of the duct and the part were adiabatic. The part was located at three different points in the y-direction, and these parameters were tested at three different Reynolds numbers (\(150\le \mathrm{Re} \le 600\)). The results were also compared with a non-triangular arc shaped case. The results show that insertion of a triangular arc shaped cross-section part increased the heat transfer for all the Reynolds numbers and the best heat transfer was observed for the part position with y = 1.75 H.

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Correspondence to D. E. Alnak or K. Karabulut.

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Alnak, D.E., Karabulut, K. Effect of Arc Shaped Bar on Heat Transfer and Fluid Characteristics at Cooling of Electronic Equipment. J. Engin. Thermophys. 29, 657–673 (2020). https://doi.org/10.1134/S1810232820040128

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